Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection
Cybersecurity researchers have shed light on a novel attack chain that employs phishing emails to deliver an open-source backdoor called VShell
Phishing uses deceptive messages to steal credentials or deliver malware, while user verification, MFA, and email filtering reduce the risk.
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Background for this topic.
Phishing is deceptive communication—by email, text, phone, or a fake website—that impersonates a trusted person or service to make someone disclose credentials, approve a transaction, reveal sensitive information, or run harmful software. Attackers use it to bypass technical controls by persuading a legitimate user to perform an action, and may target employees, customers, administrators, or suppliers.
Its impact can include account takeover, unauthorized payments, exposure of personal or business data, and access to internal systems. The most effective control for stolen-password phishing is phishing-resistant multi-factor authentication, such as hardware-backed passkeys or security keys, which binds authentication to the legitimate site. Organizations should also filter and authenticate messaging where possible, use password managers, restrict risky actions, train users to verify unusual requests through a separate channel, and provide rapid reporting so suspected credentials or sessions can be revoked.
Cybersecurity researchers have shed light on a novel attack chain that employs phishing emails to deliver an open-source backdoor called VShell
North Korean threat actors have been attributed to a coordinated cyber espionage campaign targeting diplomatic missions in their southern counterpart between March and July 2025
The threat actors behind the Noodlophile malware are leveraging spear-phishing emails and updated delivery mechanisms to deploy the information stealer in attacks aimed at enterprises located in the U.S., Europe, Baltic countries, and the Asia-Pacific (APAC) region