Threat center

The Heimdal Security threat center, where you can find out more about the latest threats and security alerts we issued.

companies affected by ransomware in 2021 cover Heimdal security blog

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Companies Affected by Ransomware [Updated 2023]

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SECURITY ALERT: Danish Customers Targeted by Active PostNord DK Phishing Campaign

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SECURITY ALERT: Heimdal® Identifies Active Phishing Campaign Singleing Out Romanian Telecom Users

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SECURITY ALERT: Heimdal® Detects Massive MitID Smishing Campaign Targeting Nordea Bank Customers

threat hunting tools

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10 Free & Open-Source Threat-Hunting Tools for 2023

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SECURITY ALERT: Actively Exploited Microsoft Outlook Vulnerability Imperils Microsoft 365 Apps

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Security Alert: New Fake Customs Invoicing Smishing Campaign Targeting Romanian Telecom Users

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SECURITY ALERT: Danish Consumers Targeted by Danskespil.dk Smishing Wave

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SECURITY ALERT: Aikido Wiperware Leverages Security Controls Vulnerability to Delete System Files with User-Type Privileges

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SECURITY ALERT: Heimdal® Responds to CEO Fraud Attempt Launched by Unknown Perpetrator

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SECURITY ALERT: Zero-Day Microsoft Support Diagnostic Tool Vulnerability CVE-2022-30190 Enables Remote Code Execution

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SECURITY ALERT: Active Golang-Written Botnet StealthWorker Infects Thousands of Websites via Distributed Brute-Force Attacks

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Heimdal™ Security Rolls Out Patch & Asset Management for Linux Systems

RATDispenser cover Heimdal security blog

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JavaScript Loader RATDispenser Infects Windows PCs with RATs

security alert conti ransomware

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SECURITY ALERT: Conti Ransomware Restrains Compromised Customers with Legitimate RC Software

Top Online Scams

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Here are the Top Online Scams You Need to Avoid Today

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SECURITY ALERT: Print Spooler Vulnerability’s Code Leak Compels Microsoft to Upgrade Severity Level.

Patch Tuesday June 2021 Heimdal Security

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Patch Tuesday, June 2021: Microsoft Releases 50 Security Fixes for Critical Issues Including Six Zero-Days That Are Actively Exploited in the Wild

microsoft exchange vulnerability press release

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Heimdal™ Proactively Protects Its Customers Against Microsoft Exchange Server Exploit

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SECURITY ALERT: Microsoft released emergency fixes for 4 Zero-Days in Exchange

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SECURITY ALERT: Newly Discovered Fan Courier Phishing Campaign Targets Romanian Companies

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SECURITY ALERT: Zoom Video Phishing Emails Targeting Corporate HVTs (UPDATED)

Operation Tovar concept image by Heimdal Security

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Operation Tovar: What It Was and How A Key Botnet Was Eliminated

concept photo norwegian scam phone call

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SECURITY ALERT: New Norwegian Campaign of Scam Phone Calls (Impersonating Microsoft)

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SECURITY ALERT: Heimdal™ Puts out an APB on Russian Hackers Responsible for Danish Reseller Attack

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SECURITY ALERT: Donald Trump Campaign Website Temporarily Disrupted by Vigilante Hacking Group

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SECURITY ALERT: Twitter Data Cache on Firefox May Have Left Your Personal Data Visible on Shared Computers

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SECURITY ALERT: Zoom Under Scrutiny in Wake of UNC Patch Injection Issue Disclosure

netflix phishing campaign concept art

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SECURITY ALERT: New Netflix Phishing Campaign Detected

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SECURITY ALERT: New LinkedIn OneDrive Phishing Campaign Detected by Heimdal™ Security