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Sinabis Writeblocker. Evidence in. Nothing out.

A hardware write blocker that sits between the evidence drive and your workstation. Reads pass straight through, every write is physically blocked, so the original data stays forensically intact. Available as SATA and USB models.

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Write protection in hardware, not software.

WBSATA · USBReadWrite blockedEvidence driveSinabis WriteblockerInvestigator host
Physically read-only
Write commands are intercepted in hardware before they ever reach the drive. No driver, no setting and no mistake can let a write through.
Forensic integrity
The original storage device stays bit for bit unchanged, so your image holds up as evidence and your hash values match every time.
Plug in and work
Connect the drive, connect your host, start imaging. No configuration and no risk of mounting a disk read-write by accident.

Two models for every carrier.

SATA Writeblocker
SATA Writeblocker
For 2.5" and 3.5" SATA hard drives and SSDs. Connects to your workstation over USB.
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USB Writeblocker
USB Writeblocker
For USB storage: external drives, enclosures and thumb drives. Connects to your workstation over USB.
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Technical details.

SATA model
USB model
Interface
SATA / USB
USB / USB
Supported media
3.5" & 2.5" storage media
USB flash drives, external hard drives (USB)
Origin
Designed, developed and assembled in Germany
Designed, developed and assembled in Germany
Software
No additional software needed
No additional software needed
Cooling
Internal cooling
–
Power supply
External power supply
External power supply

Independently validated.

NIST-tested: across every test run, not a single sector on the protected drive was modified.

Order your Writeblocker.

SATA and USB models are available in the Sinabis Analytics shop. Talk to us about volume orders and forensic tooling.

Frequently asked questions

What we get asked most often about this topic. If your question is missing, write to office@sinabis.com.

A device placed between a storage medium and the analysis computer that allows read access but physically blocks every write command, so the original evidence cannot be altered.

Software blocking depends on the operating system behaving correctly. A hardware write blocker enforces read-only at the interface, independent of the host, its drivers and its configuration.

The SATA model handles 2.5" and 3.5" SATA hard drives and SSDs. The USB model handles USB mass storage such as external drives and thumb drives. Both connect to your workstation over USB.

Our SATA write blocker is NIST-tested. The published test reports document that no sectors were modified during validation.

Directly in the shop on this website. For larger orders or questions about model choice, contact sales@sinabis.com.