New Report: The Digital Footprints of Many Executives Can Leave Their Companies Seriously Exposed

Senior leaders are visible by design. They speak at events, post on LinkedIn, sit on boards, and sign public filings. That visibility builds brands and drives growth. It also creates risk. In our latest Rapid7 Labs report, Executives’ Digital Footprints: The Overlooked Corporate Vulnerability , w...

APT28 Targeted European Entities Using Webhook-Based Macro Malware

The Russia-linked state-sponsored threat actor tracked as APT28 has been attributed to a new campaign targeting specific entities in Western and Central Europe. The activity, per S2 Grupo's LAB52 threat intelligence team, was active between September 2025 and January 2026. It has been codenamed...

The vulnerability of Microsoft Exchange Server servers, related to errors in information representation by the user interface, allows attackers to perform spear-phishing attacks.

The vulnerability of Microsoft Exchange Server servers is related to errors in information representation by the user interface. Exploiting this vulnerability can allow attackers to perform spear-phishing attacks remotely...

The vulnerability of the Azure HDInsight data analytics service, related to the lack of protective measures for website structures, allows attackers to perform spear-phishing attacks.

The vulnerability of the Azure HDInsight data analytics service is related to the lack of security measures for website structures. Exploiting this vulnerability could allow attackers to perform spear-phishing attacks remotely...

Assessing Spear-Phishing Website Generation in Large Language Model Coding Agents

Large Language Models are expanding beyond being a tool humans use and into independent agents that can observe an environment, reason about solutions to problems, make changes that impact those environments, and understand how their actions impacted their environment. One of the most common...

The vulnerability of the Microsoft Outlook email client, as well as Microsoft Office suites, Excel, and 365 Enterprise Apps, relates to insufficient protection of sensitive data, allowing attackers to carry out spear-phishing attacks.

The vulnerability of the Microsoft Outlook client, as well as Microsoft Office suites, Excel, and 365 Enterprise Apps, is related to insufficient protection of sensitive data. Exploiting this vulnerability can allow attackers to carry out spear-phishing attacks...

The vulnerability of the Azure DevOps Server software lies in the insufficient testing of server-side requests, which allows attackers to perform spearfishing attacks.

The vulnerability of the Azure DevOps Server software lies in insufficient testing of server-side requests. Exploiting this vulnerability allows attackers to perform spear-phishing attacks remotely...

Bloody Wolf Targets Uzbekistan, Russia Using NetSupport RAT in Spear-Phishing Campaign

The threat actor known as Bloody Wolf has been linked to a campaign targeting Uzbekistan and Russia to infect systems with a remote access trojan known as NetSupport RAT. Cybersecurity vendor Kaspersky is tracking the activity under the moniker Stan Ghouls. The threat actor is known to be active...

ThreatsDay Bulletin: Codespaces RCE, AsyncRAT C2, BYOVD Abuse, AI Cloud Intrusions & 15+ Stories

This week didn’t produce one big headline. It produced many small signals — the kind that quietly shape what attacks will look like next. Researchers tracked intrusions that start in ordinary places: developer workflows, remote tools, cloud access, identity paths, and even routine user actions...

APT28’s Stealthy Multi-Stage Campaign Leveraging CVE‑2026‑21509 and Cloud C2 Infrastructure

APT28’s Stealthy Multi-Stage Campaign Leveraging CVE‑2026‑21509 and Cloud C2 Infrastructure By Pham Duy Phuc and Alex Lanstein · February 4, 2026 Updated February 9, 2026: This analysis has been updated to clarify malware naming conventions. Introduction Russian state-sponsored threat group APT28...

APT28’s Stealthy Multi-Stage Campaign Leveraging CVE‑2026‑21509 and Cloud C2 Infrastructure

APT28’s Stealthy Multi-Stage Campaign Leveraging CVE‑2026‑21509 and Cloud C2 Infrastructure By Pham Duy Phuc and Alex Lanstein · February 4, 2026 Updated February 9, 2026: This analysis has been updated to clarify malware naming conventions. Introduction Russian state-sponsored threat group APT28...

Konni Hackers Deploy AI-Generated PowerShell Backdoor Against Blockchain Developers

The North Korean threat actor known as Konni has been observed using PowerShell malware generated using artificial intelligence AI tools to target developers and engineering teams in the blockchain sector. The phishing campaign has targeted Japan, Australia, and India, highlighting the adversary'...

Filling the Most Common Gaps in Google Workspace Security

Security teams at agile, fast-growing companies often have the same mandate: secure the business without slowing it down. Most teams inherit a tech stack optimized for breakneck growth, not resilience. In these environments, the security team is the helpdesk, the compliance expert, and the incide...

Hackers Exploiting PDF24 App to Deploy Stealthy PDFSIDER Backdoor

Resecurity has identified PDFSIDER malware that exploits the legitimate PDF24 App to covertly steal data and allow remote access. Learn how this APT-level campaign targets corporate networks through spear-phishing and encrypted communications...

LOTUSLITE Backdoor Targets U.S. Policy Entities Using Venezuela-Themed Spear Phishing

Security experts have disclosed details of a new campaign that has targeted U.S. government and policy entities using politically themed lures to deliver a backdoor known as LOTUSLITE. The targeted malware campaign leverages decoys related to the recent geopolitical developments between the U.S...

MuddyWater Launches RustyWater RAT via Spear-Phishing Across Middle East Sectors

The Iranian threat actor known as MuddyWater has been attributed to a spear-phishing campaign targeting diplomatic, maritime, financial, and telecom entities in the Middle East with a Rust-based implant codenamed RustyWater. "The campaign uses icon spoofing and malicious Word documents to deliver...

FBI Warns North Korean Hackers Using Malicious QR Codes in Spear-Phishing

The U.S. Federal Bureau of Investigation FBI on Thursday released an advisory warning of North Korean state-sponsored threat actors leveraging malicious QR codes in spear-phishing campaigns targeting entities in the country. "As of 2025, Kimsuky actors have targeted think tanks, academic...

Microsoft Edge browser’s vulnerability, related to bypassing authentication through spoofing, allows attackers to elevate their privileges.

The vulnerability of Microsoft Edge relates to bypassing authentication through spear-phishing techniques. Exploiting this vulnerability allows a malicious actor to gain increased privileges remotely...

27 Malicious npm Packages Used as Phishing Infrastructure to Steal Login Credentials

Cybersecurity researchers have disclosed details of what has been described as a "sustained and targeted" spear-phishing campaign that has published over two dozen packages to the npm registry to facilitate credential theft. The activity, which involved uploading 27 npm packages from six differen...

The vulnerability of the Downloads Panel component of the Mozilla Firefox browser and the Thunderbird email client allows attackers to perform spear-phishing attacks.

The vulnerability of the Downloads Panel component in the Mozilla Firefox browser and the Thunderbird email client is related to deficiencies in the authentication process, resulting from incorrect display of the domain name in the address bar. Exploiting this vulnerability allows a malicious act...