Beware of threats lurking in booby-trapped PDF files
Looks can be deceiving, so much so that the familiar icon could mask malware designed to steal your data and money. 06 Oct 2025 • …
Author: Cybernoz
Weaponized Putty and Teams Ads Deliver Malware Allowing Hackers to Access Devices and Networks
An ongoing malicious advertising campaign is weaponizing legitimate software downloads to deploy OysterLoader malware, previously identified as Broomstick and CleanUpLoader. This sophisticated initial access tool…
Microsoft’s WSUS Patch Causes Hotpatching Failures on Windows Server 2025
Microsoft has acknowledged a critical issue affecting Windows Server 2025 systems enrolled in the Hotpatch program. A recent Windows Server Update Services (WSUS) patch was…
How nations build and defend their cyberspace capabilities
In this Help Net Security interview, Dr. Bernhards Blumbergs, Lead Cyber Security Expert at CERT.LV, discusses how cyberspace has become an integral part of national…
Microsoft Detects “SesameOp” Backdoor Using OpenAI’s API as a Stealth Command Channel
Nov 04, 2025Ravie LakshmananArtificial Intelligence / Malware Microsoft has disclosed details of a novel backdoor dubbed SesameOp that uses OpenAI Assistants Application Programming Interface (API)…
Why successful businesses are built on protection
Company leaders need to recognize the gravity of cyber risk, turn awareness into action, and put security front and center 07 Oct 2025 • ,…
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…
Cybercriminals have built a business on YouTube’s blind spots
The days when YouTube was just a place for funny clips and music videos are behind us. With 2.53 billion active users, it has become…
Microsoft Detects “SesameOp” Backdoor Using OpenAI’s API as a Stealth Command Channel
Nov 04, 2025Ravie LakshmananArtificial Intelligence / Malware Microsoft has disclosed details of a novel backdoor dubbed SesameOp that uses OpenAI Assistants Application Programming Interface (API)…
Passwords alone are not enough
Never rely on just a password, however strong it may be. Multi-factor authentication is essential for anyone who wants to protect their online accounts from…
Using the OpenAI Assistants API for Covert C2 Communication
Microsoft’s Detection and Response Team has exposed a sophisticated backdoor malware that exploits the OpenAI Assistants API as an unconventional command-and-control communication channel. Named SesameOp,…
Deepfakes, fraud, and the fight for trust online
In this Help Net Security video, Michael Engle, Chief Strategy Officer at 1Kosmos, explains how deepfakes are changing online identity verification. He describes how fake…