SesameOp Backdoor Abused OpenAI Assistants API for Remote Access
Microsoft researchers found the SesameOp backdoor using OpenAI’s Assistants API for remote access, data theft, and command communication.
SesameOp: New backdoor exploits OpenAI API for covert C2
Microsoft found a new backdoor, SesameOp, using the OpenAI Assistants API for stealthy command-and-control in hacked systems. Microsoft uncovered a new backdoor, named SesameOp, that abuses the OpenAI Assistants API for command-and-control, allowing covert communication within compromised systems. Microsoft Incident Response – Detection and Response Team (DART) researchers discovered the backdoor in July 2025 while […]
SesameOp Malware Abuses OpenAI API
A component of the newly discovered SesameOp backdoor uses the API to store and relay commands from the C&C server.
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Crooks exploit RMM software to hijack trucking firms and steal cargo
Hackers target trucking firms with RMM tools to steal freight, teaming with organized crime to loot goods, mainly food and beverages. Cybercriminals are targeting trucking and logistics firms with RMM tools (remote monitoring and management software) to steal freight. Active since June 2025, the group works with organized crime to loot goods, mainly food and […]
Malicious PuTTY Ads Deliver OysterLoader, Allowing Attackers Full Device and Network Access
The Rhysida ransomware gang has been running a sophisticated malvertising campaign that delivers OysterLoader malware through deceptive search engine advertisements, giving attackers complete access to compromised devices and networks. The Rhysida gang…
Jabber Zeus developer ‘MrICQ’ extradited to US from Italy
Ukrainian Yuriy Rybtsov, aka MrICQ, a suspected Jabber Zeus developer, was extradited from Italy to the US to face cybercrime charges. Ukrainian national Yuriy Igorevich Rybtsov (41), aka MrICQ, an alleged Jabber Zeus developer, was arrested in Italy, lost his extradition appeal, and has been sent to the US to face cybercrime charges. After a […]
New Dante Spyware Linked to Rebranded Hacking Team, Now Memento Labs
Kaspersky researchers uncovered Operation ForumTroll, an attack campaign utilising the new ‘Dante’ spyware developed by Memento Labs, the rebranded Hacking Team. The attacks used a Chrome zero-day vulnerability (CVE-2025-2783) and COM hijacking for per…
Android Apps misusing NFC and HCE to steal payment data on the rise
Zimperium zLabs found 760+ Android apps abusing NFC and HCE to steal payment data, showing a surge in NFC relay fraud since April 2024. Zimperium zLabs researchers spotted over 760 Android apps abusing Near-Field Communication (NFC) and Host Card Emulation (HCE) to steal payment data and commit fraud, showing rapid growth in NFC relay attacks […]
YouTube ‘Ghost Network’ Spreads Infostealer via 3,000 Fake Videos
Check Point Research exposed a sophisticated, role-based operation called the YouTube Ghost Network, distributing dangerous Lumma and Rhadamanthys Infostealer malware. Learn how cybercriminals use hijacked channels and bots to triple malicious video ou…
Chinese APT Uses ‘Airstalk’ Malware in Supply Chain Attacks
PowerShell and .NET variants of the malware abuse AirWatch’s MDM API to establish a C&C communication channel.
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