Russian Hackers Exploit Microsoft OWA Flaw to Keep Mailbox Access After Credential Rotation

The Russian threat actors recently linked to the exploitation of a now-patched vulnerability in Zimbra have been observed exploiting another vulnerability, this time in Microsoft Outlook Web Access OWA, to target U.S. and European government entities, as well as the telecommunications, financial,...

149 Hacktivist DDoS Attacks Hit 110 Organizations in 16 Countries After Middle East Conflict

Cybersecurity researchers have warned of a surge in retaliatory hacktivist activity following the U.S.-Israel coordinated military campaign against Iran, codenamed Epic Fury and Roaring Lion. "The hacktivist threat in the Middle East is highly lopsided, with two groups, Keymous+ and DieNet, drivi...

FBI Warns FSB-Linked Hackers Exploiting Unpatched Cisco Devices for Cyber Espionage

A Russian state-sponsored cyber espionage group known as Static Tundra has been observed actively exploiting a seven-year-old security flaw in Cisco IOS and Cisco IOS XE software as a means to establish persistent access to target networks. Cisco Talos, which disclosed details of the activity, sa...

FBI Warns FSB-Linked Hackers Exploiting Unpatched Cisco Devices for Cyber Espionage

A Russian state-sponsored cyber espionage group known as Static Tundra has been observed actively exploiting a seven-year-old security flaw in Cisco IOS and Cisco IOS XE software as a means to establish persistent access to target networks. Cisco Talos, which disclosed details of the activity, sa...

Russian state-sponsored espionage group Static Tundra compromises unpatched end-of-life network devices

Static Tundra is a Russian state-sponsored cyber espionage group linked to the FSB's Center 16 unit that has been operating for over a decade, specializing in compromising network devices for long-term intelligence gathering operations. The group actively exploits a seven-year-old vulnerability...

Chinese Hackers Exploit Ivanti CSA Zero-Days in Attacks on French Government, Telecoms

The French cybersecurity agency on Tuesday revealed that a number of entities spanning governmental, telecommunications, media, finance, and transport sectors in the country were impacted by a malicious campaign undertaken by a Chinese hacking group by weaponizing several zero-day vulnerabilities...

Over 70 Organizations Across Multiple Sectors Targeted by China-Linked Cyber Espionage Group

The reconnaissance activity targeting American cybersecurity company SentinelOne was part of a broader set of partially-related intrusions into several targets between July 2024 and March 2025. "The victimology includes a South Asian government entity, a European media organization, and more than...

New BPFDoor Controller Enables Stealthy Lateral Movement in Linux Server Attacks

Cybersecurity researchers have unearthed a new controller component associated with a known backdoor called BPFDoor as part of cyber attacks targeting telecommunications, finance, and retail sectors in South Korea, Hong Kong, Myanmar, Malaysia, and Egypt in 2024. "The controller could open a...

Quarterly Report: Incident Response Trends in Q4 2022

Syncro, a remote management and monitoring tool, emerges as an increasingly common tool for adversaries. By Caitlin Huey. Ransomware continued to be a top threat Cisco Talos Incident Response Talos IR responded to this quarter, with appearances from both previously seen and newly observed...

Attackers target Telecommunications sector to gain network access

Threat Level Attack Report For a detailed threat advisory, download the pdf file here Summary To gain initial access, the adversary used social engineering to impersonate IT, staff, using phone calls, SMS, and/or Telegram. When the adversary gains access to the target environment, it performs...

Researchers Uncover New Iranian Hacking Campaign Targeting Turkish Users

Details have emerged about a previously undocumented malware campaign undertaken by the Iranian MuddyWater advanced persistent threat APT group targeting Turkish private organizations and governmental institutions. "This campaign utilizes malicious PDFs, XLS files and Windows executables to deplo...