Personal data encryption software comes built into these secure USB drives, and the right choice depends on how sensitive your files are and how you plan to use them. The Kingston IronKey Vault Privacy 50 takes the top spot for its hardware encryption with multi-pin authentication and rugged build, while the iStorage datAshur PRO stands out for its independently certified security and the Integral Secure 360-C offers the best budget entry point with its USB-C convenience. The main tradeoff in this category is hardware versus software encryption: hardware-encrypted drives cost more but protect against keyloggers and work on any device, while software-encrypted options are cheaper but depend on host software. Capacity, connector type, and certification also separate these picks meaningfully. Read on for the full breakdown of which drive fits your needs and budget.
Key Takeaways
- Hardware encryption (IronKey VP50, both iStorage drives) costs roughly twice as much per gigabyte as software encryption (Integral Secure 360-C), but it defends against keylogger attacks and works on any OS without installing anything.
- The Kingston IronKey Vault Privacy 50 earned the top spot because it combines FIPS-grade design, a wear-resistant keypad, and 16GB of capacity at a price below the certified iStorage datAshur PRO.
- The Integral Secure 360-C is the only USB-C native option in the lineup, making it the most practical pick for modern laptops — but its software-based encryption means it offers weaker protection than every hardware-encrypted rival here.
- iStorage drives are the only picks with independent NCSC/CESG certification, which matters if you handle regulated data; casual users are paying a premium for credentials they may never need.
- Capacity spread is wide and confusingly priced: the 64GB datAshur Personal2 costs less per gigabyte than the 8GB Courier-197, so buyers who need space should size up rather than buy twice.
| Kingston IronKey Vault Privacy 50 16GB Encrypted USB | ![]() | Best Overall | Capacity: 16 GB | Encryption: Hardware AES 256-bit | Interface: USB 3.2 Gen 1 (Type-A) | VIEW LATEST PRICE | See Our Full Breakdown |
| Integral Secure 360-C 16GB Software Encrypted USB Flash Drive – USB-C Connector | ![]() | Best for USB-C Devices | Capacity: 16 GB | Encryption: AES 256-bit | Interface: USB 3.2 Gen 1 (Type-C) | VIEW LATEST PRICE | See Our Full Breakdown |
| Integral 8GB Courier-197 256-Bit Hardware Encrypted USB 3.0 Flash Drive | ![]() | Best Budget Pick | Capacity: 8 GB | Encryption: AES 256-bit hardware, FIPS 197 validated | Interface: USB 3.0 (Type-A) | VIEW LATEST PRICE | See Our Full Breakdown |
| Secure 32GB Encrypted USB 3.0 Flash Drive with 256-bit Hardware Encryption | ![]() | Best Value for Capacity | Capacity: 32 GB | Encryption: AES 256-bit XTS hardware | Interface: USB 3.0 (Type-A) | VIEW LATEST PRICE | See Our Full Breakdown |
| iStorage datAshur PRO 8 GB Encrypted USB Flash Drive | ![]() | Best for Rugged Environments | Capacity: 8 GB | Encryption: AES-XTS 256-bit hardware | Certification: FIPS 140-2 Level 3 | VIEW LATEST PRICE | See Our Full Breakdown |
| iStorage datAshur Personal2 64 GB Secure Flash Drive with Hardware Encryption | ![]() | Best Premium Hardware Pick | Storage Capacity: 64 GB | Encryption: AES-XTS 256-bit hardware encryption | Authentication: On-device PIN keypad | VIEW LATEST PRICE | See Our Full Breakdown |
| personal data encryption software | Encryption | Interface | Read Speed | Write Speed |
|---|---|---|---|---|
| Kingston IronKey Vault Privacy | Hardware AES 256-bit | USB 3.2 Gen 1 (Type-A) | 250 MB/s | 180 MB/s |
| Integral Secure 360-C 16GB Sof | AES 256-bit | USB 3.2 Gen 1 (Type-C) | 625 MB/s | 60 MB/s |
| Integral 8GB Courier-197 256-B | AES 256-bit hardware, FIPS 197 validated | USB 3.0 (Type-A) | 80 MB/s | 10 MB/s |
| Secure 32GB Encrypted USB 3.0 | AES 256-bit XTS hardware | USB 3.0 (Type-A) | 480 MB/s | 160 MB/s |
| iStorage datAshur PRO 8 GB Enc | AES-XTS 256-bit hardware | USB 3.0 (Type-A) | 116 MB/s | 135 MB/s |
| iStorage datAshur Personal2 64 | AES-XTS 256-bit hardware encryption | USB 3.0, Type-A connector | 116 MB/s | Up to 135 MB/s |
More Details on Our Top Picks
Kingston IronKey Vault Privacy 50 16GB Encrypted USB
Kingston’s IronKey Vault Privacy 50 earns the top spot because it balances certified-grade security with genuinely usable day-to-day features. The hardware AES 256-bit engine never exposes your password to the host computer, and the multiple password options — including admin and user modes plus a write-protect switch — give it flexibility the simpler Integral Courier-197 can’t match. Compared with that budget pick, this model is the one I’d hand to a compliance officer: TAA compliance makes it purchase-approved for US government and federal contractor work, which rules out most consumer drives here. Transfer speeds of 250 MB/s read also beat the Courier by threefold. The tradeoff is that 16GB fills up fast if you archive media, and unlike the iStorage datAshur PRO, there’s no IP57 ruggedness — this is a desk-to-pocket drive, not a job-site one.
Pros:- TAA compliant, clearing procurement requirements for federal and enterprise use
- Multiple password modes with admin and user roles for shared-device policies
- Write protection prevents accidental overwrites and malware injection
- 250 MB/s read speed keeps large file transfers practical
Cons:- 16GB capacity limits archival use
- No water or shock resistance rating for harsh environments
Best for: Government, military, and enterprise users who need TAA-compliant hardware encryption with admin-controlled access
Not ideal for: Anyone needing bulk encrypted storage or a physically rugged drive for outdoor fieldwork
- Capacity:16 GB
- Encryption:Hardware AES 256-bit
- Interface:USB 3.2 Gen 1 (Type-A)
- Read Speed:250 MB/s
- Write Speed:180 MB/s
- Compliance:TAA compliant
- Extra Security:Write protection, multiple password modes
Our verdict“The most complete security package here for professional buyers who answer to a compliance department rather than a budget.”
Integral Secure 360-C 16GB Software Encrypted USB Flash Drive – USB-C Connector
If your daily drivers are a MacBook, Android phone, or modern Windows laptop, the Integral Secure 360-C solves the dongle problem that plagues the rest of this lineup. Where the Kingston IronKey and the 32GB Secure drive both terminate in USB-A, this one plugs straight into USB-C — a small detail that changes whether the drive actually gets used. The 625 MB/s read speed is the fastest here by a wide margin, making it the pick for repeatedly moving large encrypted files. The tradeoffs are real, though: a 60 MB/s write speed means initial file loading is slow, and 16GB disappears quickly if you back up photos or documents routinely. It also lacks the government certifications of the Kingston or iStorage options, so this is personal-security territory, not compliance work.
Pros:- Native USB-C connector works with Mac, Windows, and Android without adapters
- 625 MB/s read speed is the fastest in this roundup
- AES 256-bit encryption protects data at rest
Cons:- Write speed of just 60 MB/s makes loading the drive slow
- No formal security certifications for regulated environments
Best for: Owners of USB-C-only laptops and Android devices who want fast encrypted file transfers without adapters
Not ideal for: Users who frequently write large batches of files, given the slow 60 MB/s write speed
- Capacity:16 GB
- Encryption:AES 256-bit
- Interface:USB 3.2 Gen 1 (Type-C)
- Read Speed:625 MB/s
- Write Speed:60 MB/s
- Compatibility:Windows, Mac, Android, game consoles
Our verdict“The right choice when connector compatibility and read speed matter more than certifications.”
Integral 8GB Courier-197 256-Bit Hardware Encrypted USB 3.0 Flash Drive
The Courier-197 is the entry point for hardware encryption, and it does so without cutting the security itself short — you still get FIPS 197 validated AES 256-bit encryption and brute-force lockout, the same core protections as pricier drives. What you give up versus the Kingston IronKey is polish: transfer speeds of 80 MB/s read and 10 MB/s write mean this is for documents, not media libraries, and there are no admin/user password tiers or write-protect switch. Its plug-and-go design with no software installation makes it friendly for less technical users who just want to lock a folder of tax records or client files. At 8GB, treat it as a secure courier for files in transit — hence the name — rather than a storage device. For that narrow job, the price-to-security ratio is hard to argue with.
Pros:- FIPS 197 validated AES 256-bit hardware encryption at a budget price
- Auto-lock and brute-force protection guard against password attacks
- No software installation required on PC or Mac
Cons:- Very slow 10 MB/s write speed
- 8GB capacity fits documents but little else
Best for: Budget-conscious users who need certified encryption for moving sensitive documents between computers
Not ideal for: Anyone transferring large files regularly — the 10 MB/s write speed will test patience
- Capacity:8 GB
- Encryption:AES 256-bit hardware, FIPS 197 validated
- Interface:USB 3.0 (Type-A)
- Read Speed:80 MB/s
- Write Speed:10 MB/s
- Compatibility:PC, Mac, USB-enabled devices
- Extra Security:Auto-lock, brute-force attack protection
Our verdict“The cheapest way to get genuinely certified hardware encryption, as long as your files are small.”
Secure 32GB Encrypted USB 3.0 Flash Drive with 256-bit Hardware Encryption
This generic-branded 32GB drive wins on a simple metric: the most encrypted storage per dollar in this lineup. Doubling the capacity of the Kingston IronKey while undercutting it on price makes sense for people whose encrypted archives actually need room. The XTS mode encryption is the stronger variant of AES 256 — the same standard the iStorage datAshur PRO uses — and 480 MB/s reads with a zinc alloy shell give it a premium feel for the money. The catch is policy: a factory reset after 10 wrong password attempts is aggressive, and forgetful users will lose their data with no recovery path. The 30-day return window also signals weaker long-term support than Kingston or iStorage offer. Buy it for capacity and speed on a budget, not for mission-critical or compliance-driven storage.
Pros:- 32GB capacity doubles most picks in this roundup
- AES-XTS 256-bit encryption, a stronger mode than basic AES-CBC
- 480 MB/s read and 160 MB/s write speeds rival premium drives
- Zinc alloy body adds drop durability
Cons:- Factory reset after 10 failed passwords can destroy your data
- Short 30-day return policy and no established brand track record
Best for: Students and home-office users who want maximum encrypted capacity and fast transfers on a tight budget
Not ideal for: Anyone prone to forgetting passwords — the 10-attempt wipe policy has no recovery option
- Capacity:32 GB
- Encryption:AES 256-bit XTS hardware
- Interface:USB 3.0 (Type-A)
- Read Speed:480 MB/s
- Write Speed:160 MB/s
- Build:Zinc alloy shell
- Warranty:30-day return policy
Our verdict“The capacity-per-dollar leader for personal backups, provided you keep your password somewhere safe.”
iStorage datAshur PRO 8 GB Encrypted USB Flash Drive
The datAshur PRO takes a different security philosophy from everything else here: onboard PIN authentication. You unlock the drive with its physical keypad before plugging it in, so your password is never typed on a potentially keylogged computer — a genuine advantage the Kingston IronKey and Integral Courier-197 can’t claim, since both require typing credentials on the host machine. It’s also the only pick with FIPS 140-2 Level 3 certification and an IP57 water and dust rating, which is why it suits fieldwork, travel, and job sites where drives get dropped and rained on. The costs are capacity and price: 8GB is the smallest tier here, and per-gigabyte it runs well above the 32GB generic drive. For protecting a small set of high-value files in hostile conditions, nothing else in this lineup matches it.
Pros:- Onboard keypad PIN entry keeps passwords off untrusted host computers
- FIPS 140-2 Level 3 certification, the strongest validation in this roundup
- IP57 water and dust resistance for harsh environments
- 135 MB/s write speed beats every other drive listed
Cons:- Only 8GB of storage at a premium price
- No software interface means fewer configuration and recovery options
Best for: Field workers, journalists, and travelers who need certified encryption that survives weather, drops, and untrusted computers
Not ideal for: Budget buyers or anyone needing more than a few gigabytes — the cost per GB is the highest here
- Capacity:8 GB
- Encryption:AES-XTS 256-bit hardware
- Certification:FIPS 140-2 Level 3
- Interface:USB 3.0 (Type-A)
- Read Speed:116 MB/s
- Write Speed:135 MB/s
- Durability:IP57 water and dust resistant
- Authentication:Onboard PIN keypad
Our verdict“The most physically and cryptographically hardened pick for people whose threat model includes more than a lost briefcase.”
iStorage datAshur Personal2 64 GB Secure Flash Drive with Hardware Encryption
This option stands out as the most complete hardware-encrypted drive in this lineup, pairing AES-XTS 256-bit encryption executed on the drive itself with a keypad-based PIN unlock. Because everything happens in hardware, the drive works on everything from Windows and macOS to Android, Citrix, and embedded systems with zero software installation — a real advantage over the Integral Secure 360-C, which relies on software encryption and limits where you can use it. Compared with the smaller iStorage datAshur PRO 8 GB, the Personal2 offers eight times the capacity at similar convenience, making it practical for carrying actual working files rather than just credentials. The tradeoffs are real: 64 GB fills fast if you handle video archives or large backups, and entering a PIN on every unlock tests the patience of anyone moving files frequently. It also costs more than every software-based rival here.
Pros:- Hardware AES-XTS 256-bit encryption keeps data safe even if the drive is lost or stolen
- No software needed — works across PCs, macOS, Linux, Android, Citrix, VMware, and thin clients
- Fast USB 3.0 speeds up to 135MB/s write for quick file transfers
- Largest capacity of any hardware-encrypted drive in this roundup
Cons:- 64 GB fills quickly for anyone working with large media or backups
- PIN entry on every unlock adds friction for frequent, small transfers
- Noticeably pricier than software-encrypted alternatives like the Integral Courier-197
Best for: Professionals who carry sensitive client or company documents across multiple machines and platforms and want self-contained security that survives a lost or stolen bag
Not ideal for: Budget buyers or anyone needing to transport large media libraries — the per-gigabyte cost is high and 64 GB is tight for big file collections
- Storage Capacity:64 GB
- Encryption:AES-XTS 256-bit hardware encryption
- Authentication:On-device PIN keypad
- Interface:USB 3.0, Type-A connector
- Read Speed:116 MB/s
- Write Speed:Up to 135 MB/s
- Compatibility:PC, macOS, Linux, Android, Chrome, Thin Clients, Citrix, VMware, Embedded Systems
- Color:Black
Our verdict“This pick makes the most sense for buyers who want set-it-and-forget-it hardware security across any device and are willing to pay a premium for capacity the cheaper drives can’t match.”

How We Picked
I ranked these six drives by focusing on what actually determines security and usability: encryption type first (hardware with an onboard cryptographic chip versus software running on the host), authentication method (onboard keypads beat host-typed passwords because they resist keyloggers), and independent certification (FIPS and NCSC validation signals real, audited protection rather than marketing claims). From there I weighed build quality, connector compatibility, capacity per dollar, and everyday convenience — a drive that survives a pocket but frustrates you on every unlock will end up unused, which defeats the purpose of encryption.
The ranking logic follows risk level. Buyers with genuinely sensitive files should land on the hardware-encrypted, keypad-authenticated drives (Kingston and iStorage), so those rank highest. The Integral Secure 360-C ranks as the value pick because its software encryption is adequate for low-stakes personal files and its USB-C connector fits modern machines natively. The Courier-197 and the 32GB Secure drive fill the middle ground: real hardware encryption at lower price points, with tradeoffs in capacity, branding transparency, and certification that keep them below the leaders.
| personal data encryption software | Encryption | Interface | Compatibility |
|---|---|---|---|
| Kingston IronKey Vault Privacy | Hardware AES 256-bit | USB 3.2 Gen 1 (Type-A) | — |
| Integral Secure 360-C 16GB Sof | AES 256-bit | USB 3.2 Gen 1 (Type-C) | Windows, Mac, Android, game consoles |
| Integral 8GB Courier-197 256-B | AES 256-bit hardware, FIPS 197 validated | USB 3.0 (Type-A) | PC, Mac, USB-enabled devices |
| Secure 32GB Encrypted USB 3.0 | AES 256-bit XTS hardware | USB 3.0 (Type-A) | — |
| iStorage datAshur PRO 8 GB Enc | AES-XTS 256-bit hardware | USB 3.0 (Type-A) | — |
| iStorage datAshur Personal2 64 | AES-XTS 256-bit hardware encryption | USB 3.0, Type-A connector | PC, macOS, Linux, Android, Chrome, Thin Clients, Citrix, VMware, Embedded Systems |
Factors to Consider When Choosing Personal Data Encryption Software
Before spending money on any of these six drives, it helps to understand the broader landscape of personal data encryption — because the most common mistakes happen before the purchase, not after it.
Hardware vs. Software Encryption: The Decision That Matters Most
This single choice drives most of the price difference across this roundup. Hardware encryption places the cryptographic chip inside the drive itself, so decryption keys never touch your computer — meaning malware, keyloggers, and brute-force tools on the host can’t intercept them. Software encryption relies on an application running on your machine, which is cheaper to produce but exposes the unlock process to whatever is running on that machine. A common mistake is assuming software encryption is useless; for tax documents or family photos, it’s a genuine improvement over an unencrypted stick. But if you carry client data, medical records, or credentials, hardware encryption is the defensible choice. If a drive’s listing is vague about which type it uses, treat that as a red flag and buy from a manufacturer that states it plainly.
Onboard Keypad vs. Host-Entered Passwords
Even among hardware-encrypted drives, there’s a second split: whether you type your PIN on the drive itself or on the keyboard of the host computer. Onboard keypads (found on the IronKey VP50 and both iStorage drives) defeat hardware keyloggers entirely, because the password never travels through the host. Host-entered passwords are fine on a trusted personal laptop but become a liability on shared or public machines. Keypad drives also tend to support admin and guest PINs, letting you share a drive with limited access — useful for families or small offices. The tradeoff is bulk and cost: keypad drives are physically larger and pricier. If you only ever unlock the drive on your own computer, that premium may be money better spent on capacity.
Why Certification Claims Deserve Scrutiny
Manufacturers love printing ‘256-bit AES’ on packaging, but that phrase alone tells you almost nothing about implementation quality. What actually carries weight is independent validation — FIPS 140-3 in North America, or NCSC certification in the UK, both of which involve third-party auditing of the encryption implementation. The iStorage drives in this roundup carry that level of scrutiny, which is a genuine reason for their premium pricing. Uncertified drives may still be secure, but you’re trusting the manufacturer’s own testing. A practical rule: certification matters in proportion to the damage a breach would cause. Losing encrypted vacation photos is annoying; losing a database of other people’s identities is a different category of problem entirely.
Connector Type and Device Compatibility
A secure drive you can’t plug in is worthless, and connector mismatch is one of the most frequent buyer complaints in this category. Most drives here ship with USB-A, which works on older laptops, desktops, and many cars, but requires an adapter on modern USB-C-only machines. The Integral Secure 360-C is the only native USB-C option in this lineup, and that convenience is a real differentiator if your devices have moved on from USB-A. Also check whether the unlock software or firmware works across your operating systems — hardware-encrypted drives typically work on Windows, macOS, and Linux without drivers, while software-encrypted ones often have OS-specific apps. If you regularly switch between a work PC and a personal Mac, cross-platform support should rank above raw capacity.
Capacity, Price per Gigabyte, and Buying Twice
Encrypted drives carry a dramatic price-per-gigabyte premium over ordinary flash storage — often ten to twenty times higher — because you’re paying for the security hardware, not the memory. Within this category, though, the math varies surprisingly: the 64GB datAshur Personal2 actually delivers a better cost per gigabyte than the 8GB models. My advice is to buy slightly more capacity than you currently need, because encrypted drives can’t be expanded and repurchasing means re-encrypting and migrating everything. That said, don’t overbuy either: for text documents and credentials, 8GB is genuinely sufficient, and a smaller capacity can even be a discipline advantage, forcing you to keep the drive purpose-focused rather than letting it become a general dumping ground.
Brute-Force Protection and Self-Destruct Behavior
A feature most buyers overlook until it matters: what happens when someone enters the wrong PIN repeatedly? Quality hardware-encrypted drives include brute-force lockdown — after a set number of failed attempts, the drive either locks permanently or cryptographically erases its own keys, rendering the data unrecoverable. Software-encrypted drives sometimes allow unlimited attempts, limited only by password length, which is a genuine weakness against patient attackers. Look for stated lockout policies in the specifications, and check whether the drive offers a read-only mode, which lets you plug into an untrusted computer without risking infection of your files. These details separate a thoughtfully designed security product from a generic drive with encryption branding.
Frequently Asked Questions
Is software encryption like on the Integral Secure 360-C actually safe for personal files?
For most personal use — tax documents, scanned IDs, family records — software encryption is a meaningful step up from no encryption, and it will defeat the opportunistic thief who finds a lost drive. The 256-bit AES algorithm itself is strong; the weakness is the surrounding environment, because the unlock process runs on your computer where malware or a keylogger could capture your password. That risk is small on a well-maintained personal machine but grows on shared or public computers. If you only ever unlock the drive on your own laptop, the 360-C is a reasonable and affordable choice. If you can’t control where the drive gets used, spend more on hardware encryption with an onboard keypad.
Why do the iStorage drives cost so much more than similar-capacity options?
You’re paying primarily for independent security certification rather than memory. iStorage drives undergo NCSC and CESG evaluation, which involves third-party auditing of the encryption implementation, brute-force defenses, and tamper resistance — a costly process that uncertified competitors skip. Whether that premium is worth it depends on your threat model. For regulated data, client records, or corporate environments that mandate certified devices, the extra cost is non-negotiable. For personal files that are embarrassing rather than legally sensitive, the Kingston IronKey VP50 delivers comparable hardware encryption and keypad authentication at a lower price without the certification paperwork. Buy the certification when a breach would have consequences beyond your own privacy.
What happens if I forget my PIN or password on a hardware-encrypted drive?
This is the tradeoff most buyers underestimate: there is no recovery path on a properly encrypted drive. If the encryption is real, the manufacturer cannot retrieve your data — that’s the entire point of the design. Most keypad drives let you set an admin PIN that can rescue a forgotten user PIN, so configure that immediately and store it somewhere separate from the drive. Some models also support a recovery code printed during setup, but only if you register it before you need it. The practical discipline is to treat the drive as one factor of your security, not your only copy: keep a second encrypted backup of anything irreplaceable. Buyers who skip this step are the ones who lose data to their own security, not to attackers.
Will a USB-A encrypted drive work with my USB-C laptop?
Yes, with a simple caveat: a basic USB-A to USB-C adapter or cable will work because these drives use standard USB mass storage protocols, and hardware-encrypted models don’t need drivers regardless of host. What you should verify is that the unlock mechanism works through the adapter — keypad drives unlock on the device itself, so they’re unaffected, while software-encrypted drives need the host app to run on your operating system. Adapters cost a few dollars, but if every device you own is USB-C, the Integral Secure 360-C’s native USB-C connector eliminates a permanent friction point. One caution: avoid cheap unbranded adapters for regular use, as flaky power delivery can cause disconnections mid-transfer, which risks file corruption on any drive.
Can I use one encrypted drive across Windows, Mac, and Linux?
Hardware-encrypted drives are the reliable cross-platform choice because they present themselves as a standard USB storage device once unlocked — no drivers or apps required on any OS. The Kingston IronKey and iStorage drives all work this way, unlocking via their onboard keypads and then behaving like any normal flash drive. Software-encrypted options are less predictable: some provide apps for both Windows and macOS but not Linux, and some require admin rights to install, which you may not have on a work machine. Before buying, check the manufacturer’s supported OS list against every device you plan to use. If cross-platform flexibility is a priority, that alone justifies choosing a keypad hardware-encrypted model over a cheaper software option.
Conclusion
Mapping these six drives to buyer types closes the decision cleanly. For best overall, the Kingston IronKey Vault Privacy 50 balances hardware encryption, keypad authentication, 16GB of capacity, and rugged construction at a price below the certified competition. For best value, the Integral Secure 360-C delivers adequate software encryption and native USB-C at the friendliest price, ideal for low-sensitivity files on modern machines. For best premium, the iStorage datAshur PRO justifies its cost with NCSC certification and superior tamper defenses — the right pick for regulated or professionally sensitive data.
For beginners, the Integral Courier-197 offers genuine hardware encryption with simple operation at a gentle entry price, making it a low-risk first secure drive. For specific needs: choose the 32GB Secure drive if you need hardware encryption with more room for media and archives, and pick the iStorage datAshur Personal2 if 64GB of certified hardware-encrypted storage at the best cost per gigabyte fits your workload. Whatever you choose, configure any admin PIN or recovery options on day one, and keep a second encrypted copy of anything you can’t afford to lose.





