September 2026

Slim Spider Steals Crypto Custody Secrets From Brazilian Financial Institution

A previously undocumented financially motivated threat actor has been linked to attacks targeting Brazilian financial institutions since at least March 2026.

Cybersecurity company CrowdStrike is tracking the Brazil-based activity cluster under the name Slim Spider.

“The adversary demonstrates deep operational knowledge of Brazilian financial infrastructure, including the instant payment

  • September 9, 2026

Liquid Hackers Return 3,400 Bitcoin Taken via Elements Bug, Still Holding $47M in BTC

Whoever took nearly 4,000 bitcoin from the Liquid Network on Sunday, September 6, returned 3,400 of it the next day, Bitcoin’s public record shows. About 598.5 bitcoin has not come back.

Liquid is a Bitcoin sidechain that holds real bitcoin to back a token called L-BTC. The network is still paused, so holders cannot turn that token back into bitcoin.

The 3,400 bitcoin was sent to a&

  • September 9, 2026

ChatGPT Flaw Let a Planted Prompt Send a Victim’s Gmail Data to Another Account

Check Point Research said in a report published today that a single instruction planted in a ChatGPT conversation could cause ChatGPT to quietly work for an attacker while answering the user’s question as usual.

In the company’s proof of concept, that hidden work read data from the user’s connected Gmail account and passed it to a second ChatGPT account through a hidden channel

  • September 9, 2026