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Background for this topic.
An exploit is code, data, or a sequence of actions that uses a software, hardware, or configuration vulnerability to produce unintended behavior. Depending on the flaw and the attacker’s access, it may enable unauthorized code execution, privilege escalation, information disclosure, or denial of service. Exploitation can occur remotely through exposed services, web applications, or client software, or locally after an attacker gains limited access.
Exploitation matters because a vulnerability becomes an active attack path when the required conditions are reachable and exploitable. Defenders should inventory affected assets, prioritize remediation when exploitation is known or credible, apply patches or vendor mitigations, and reduce exposure through access controls, segmentation, and secure configuration. Monitoring for exploit-specific indicators—such as abnormal requests, unexpected processes, or privilege changes—supports detection; systems suspected of successful exploitation require containment and investigation for follow-on access.
A newly disclosed critical security flaw in CrushFTP has come under active exploitation in the wild. Assigned the CVE identifier CVE-2025-54309, the vulnerability carries a CVSS score of 9.0
PoisonSeed Threat Actor Uses Cross-Device Login Feature and QR Code to Trick UsersExpel researchers have found a novel adversary-in-the-middle phishing technique used by PoisonSeed, a cybercrime group previously tied to large-scale cryptocurrency thefts, to sidestep one of the most secure forms of multifactor authentication - FIDO2 physical keys.
Multiple US Government Agencies Have Used the Now-Patched Message Archiving AppAttackers are actively attempting to exploit a vulnerability that exists in older versions of the Signal message app clone TeleMessage TM SGNL, built by Smarsh to keep copies of all communications, including the ability to comply with federal record-keeping requirements.
A critical Citrix NetScaler vulnerability, tracked as CVE-2025-5777 and dubbed "CitrixBleed 2," was actively exploited nearly two weeks before proof-of-concept (PoC) exploits were made public, despite Citrix stating that there was no evidence of attacks. [...]
A new malware campaign uses GitHub to deliver payloads via Amadey botnet, bypassing email distribution
Cybersecurity researchers have discovered a new campaign that exploits a known security flaw impacting Apache HTTP Server to deliver a cryptocurrency miner called Linuxsys
Multiple Fortinet FortiWeb instances recently infected with web shells are believed to have been compromised using public exploits for a recently patched remote code execution (RCE) flaw tracked as CVE-2025-25257. [...]
Google on Tuesday rolled out fixes for six security issues in its Chrome web browser, including one that it said has been exploited in the wild
Attackers Can Upload Malware in System Management Mode and Disable Secure BootMultiple high-severity vulnerabilities in Gigabyte's UEFI firmware could enable attackers to execute arbitrary code within System Management Mode, granting persistent and nearly undetectable control over affected systems, cybersecurity researchers reported.
Criminal networks are adapting quickly, and they're betting that companies won't keep pace. Let's prove them wrong.
A new phishing campaign uses SVG files for JavaScript redirects, bypassing traditional detection methods
A zero-click exploit called EchoLeak reveals how AI assistants like Microsoft 365 Copilot can be manipulated to leak sensitive data without user interaction. This entry breaks down how the attack works, why it matters, and what defenses are available to proactively mitigate this emerging AI-native threat.
Ransomware Group Among Attackers Focused on Exploiting Citrix Netscaler FlawSecurity experts warn that attackers have ramped up their collective attempts to find and exploit Citrix NetScaler devices that remain unpatched. Cloud Security Group patched CVE-2025-5777, a flaw also known as "Citrix Bleed 2," nearly four weeks ago with a software update.
In cybersecurity, precision matters—and there’s little room for error. A small mistake, missed setting, or quiet misconfiguration can quickly lead to much bigger problems. The signs we’re seeing this week highlight deeper issues behind what might look like routine incidents: outdated tools, slow response to risks, and the ongoing gap between compliance and real security
Cybersecurity researchers have discovered a new hacking technique that exploits weaknesses in the eSIM technology used in modern smartphones, exposing users to severe risks
PLUS: Bluetooth mess leaves cars exposed; Bitcoin ATMs attacked; Deepfakers imitate US secretary of state Marco Rubio; and more Infosec In Brief Nvidia last week advised customers to ensure they employ mitigations against Rowhammer attacks, after researchers found one of its workstation-grade GPUs is susceptible to the exploit.…