Apricorn
Apricorn 1TB Aegis Padlock USB 3.0 256-bit AES XTS Hardware Encrypted Portable External Hard Drive (A25-3PL256-1000)
Bottom line: The Apricorn 1TB Aegis Padlock USB 3.0 256-bit AES XTS Hardware Encrypted ($249.00 on Amazon as of 2026-10-21 16:24 UTC): Hardware 256-bit AES-XTS encryption covers all data in real time; main trade-off: self-destruct after brute-force attempts means a forgotten PIN can wipe your data.
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*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Hardware 256-bit AES-XTS encryption covers all data in real time
- ✓ Keypad unlock works with no software install and no admin rights
- ✓ FIPS PUB 197 validated encryption algorithm
- ✓ Epoxy coating seals the internals against physical tampering
- ✓ USB 3.0 speed and still works in USB 2.0 and 1.1 ports
Cons
- ✗ Self-destruct after brute-force attempts means a forgotten PIN can wipe your data
- ✗ Hard drive design, not flash, so expect slower speed than encrypted SSDs
- ✗ 1TB is modest next to larger encrypted drives
- ✗ USB 3.0 is an older standard than current USB 3.2 and USB4 ports
Manufacturer description
The Apricorn Aegis Padlock 1TB (A25-3PL256-1000) is a portable external hard drive that encrypts everything you store on it, in hardware, in real time. It uses 256-bit AES-XTS encryption built on the FIPS PUB 197 validated algorithm. Your files stay protected even if someone pulls the hard drive out of its enclosure. You unlock the drive with its built-in keypad, not with software. Nothing needs to be installed and you don't need admin rights, so it works on locked-down work laptops and shared computers where you can't add encryption tools. The keypad is made to resist wear, and an epoxy…
SpecPicks Verdict
SpecPicks scored Apricorn 1TB Aegis Padlock USB 3.0 256-bit AES XTS Hardware… using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. Apricorn's external storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Do I need to install software to use the Apricorn Aegis Padlock 1TB?
No. All encryption and authentication happen on the drive itself through its built-in keypad. You don't install any software and you don't need admin rights on the host computer.
What type of encryption does the Aegis Padlock 1TB use?
This model (A25-3PL256-1000) uses 256-bit AES-XTS hardware encryption based on the FIPS PUB 197 validated algorithm. It encrypts all data on the drive in real time.
Will the Aegis Padlock work with USB 2.0 ports?
Yes. The drive has a USB 3.0 interface and also works in USB 2.0 and USB 1.1 ports. Transfers will run at the slower speed of the older port.
What happens if someone tries to guess my PIN?
The drive has a brute-force self-destruct feature that protects the data against repeated guessing. Store your PIN safely, because the same feature can make the data unrecoverable if you forget it. Check Apricorn's documentation for the exact attempt limit.
Is my data safe if the hard drive is removed from its case?
Yes. All data is encrypted in hardware, so it stays protected even if someone takes the drive out of its enclosure. An epoxy coating also seals the internals against physical attacks.
Key Features
- Utilizes Military Grade FIPS PUB 197 Validated Encryption Algorithm
- Super fast USB 3.0 Connection - Data transfer speeds up to 10X faster than USB 2.0
- Software Free Design - With no admin rights needed
- Sealed from Physical Attacks by Tough Epoxy Coating
- Brute Force Self Destruct Feature
- Wear Resistant Key Pad
Full Specifications
| Brand | Apricorn |
|---|---|
| Color | Multicolor |
| Model Name | Padlock |
| Read Speed | 0.5 gigabytes_per_second |
| Unit Count | 1 Count |
| Form Factor | 2.5-inch |
| Connectivity | USB |
| Model Number | A25-3PL256-1000 |
| Built-In Media | hard drive |
| Hard-Drive Size | 1 TB |
| Mfr Part Number | A25-3PL256-1000 |
| Number of Items | 1 |
| Special Feature | Hardware Encryption, Physically Epoxy Sealed, Brute Force Self-Destruct Feature, Wear Resistant Key Pad |
| Hardware Platform | Mac, PC |
| Installation Type | External Hard Drive |
| Compatible Devices | Windows, Mac and Linux |
| Data Transfer Rate | 120 megabytes_per_second |
| Enclosure Material | Aluminum/Glass |
| Additional Features | Hardware Encryption, Physically Epoxy Sealed, Brute Force Self-Destruct Feature, Wear Resistant Key Pad |
| Hard Disk Interface | USB 3.0 |
Ready to buy?
Apricorn 1TB Aegis Padlock USB 3.0 256-bit AES XTS Hardware Encrypted Portable External Hard Drive (A25-3PL256-1000) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
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