Xeltek · Breach

Actor claims Xeltek breach, publishes customer cards and SSNs

Nov 03, 2026 · 1 min read

Actor MrData claims to have compromised Xeltek, a U.S. maker of device programmers and semiconductor programming systems, and published samples from customer and address book databases. Records allegedly include names, emails, billing and shipping data, card numbers with expiration dates and CVV fields, plus SSN and password fields and order histories. The claim is unverified; customers should monitor card charges and change passwords.

By HIFY Radar newsroom Updated 11/03/2026 01:48 PM Get this every day →← Back to the feed 1 source

MediumBreachNo software to update

In this article

What happened
Why it matters
What to do
For the technical team
Timeline
Sources

What happened

An actor known as MrData claims to have breached Xeltek, a U.S. maker of chip programming equipment, and published samples of a customer database. The posted records allegedly include names, emails, billing and shipping addresses, cards with expiration dates and CVV, plus SSNs and passwords. The claim is unconfirmed and the extent of the compromise remains unverified.

Why it matters

If confirmed, Xeltek customers face card fraud, SSN misuse and account takeover through leaked passwords. Order histories and transaction details would also be exposed.

What to do

Customers should monitor card charges, change their Xeltek account password and consider blocking or replacing the card. Await an official statement from Xeltek before drawing conclusions.

For the technical team

Affected: Xeltek, fabricante americana de programadores de dispositivos e sistemas de programação de semicondutores; base alegada · Xeltek customer database; Xeltek is a U.S. maker of device programmers and semiconductor programming systems, according to the claim. No specific product or version cited.
Exploitation: No technical exploitation described; alleged data leak case. The extent of the compromise remains unverified, according to DarkWebInformer.
Fix: No fix applicable, leak incident. No patch or Xeltek statement in the sources.
Vector: Intrusion method not described in the source. Actor MrData claims to have compromised Xeltek and published samples from customer and address book databases.
More details: Actor: MrData. Single source: DarkWebInformer. Published samples include names, emails, account details, billing and shipping data, card numbers with expiration dates and CVV, SSN and password fields, order histories and transaction details. Claim not confirmed by the victim.