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North Korean Hackers Using Malicious Browser Extension to Spy on Email Accounts

North Korean Hackers Using Malicious Browser Extension to Spy on Email Accounts

Jul 30, 2022
A threat actor operating with interests aligned with North Korea has been deploying a malicious extension on Chromium-based web browsers that's capable of stealing email content from Gmail and AOL. Cybersecurity firm Volexity attributed the malware to an activity cluster it calls  SharpTongue , which is said to share overlaps with an  adversarial collective  publicly referred to under the name  Kimsuky . SharpTongue has a history of singling out individuals working for organizations in the U.S., Europe, and South Korea who "work on topics involving North Korea, nuclear issues, weapons systems, and other matters of strategic interest to North Korea," researchers Paul Rascagneres and Thomas Lancaster  said . Kimsuky 's use of rogue extensions in attacks is not new. In 2018, the actor was seen utilizing a Chrome plugin as part of a campaign called  Stolen Pencil  to infect victims and steal browser cookies and passwords. But the latest espionag...
Critical Flaw Reported in Popular Evernote Extension for Chrome Users

Critical Flaw Reported in Popular Evernote Extension for Chrome Users

Jun 13, 2019
Cybersecurity researchers discover a critical flaw in the popular Evernote Chrome extension that could have allowed hackers to hijack your browser and steal sensitive information from any website you accessed. Evernote is a popular service that helps people taking notes and organize their to-do task lists, and over 4,610,000 users have been using its Evernote Web Clipper Extension for Chrome browser. Discovered by Guardio, the vulnerability ( CVE-2019-12592 ) resided in the ways Evernote Web Clipper extension interacts with websites, iframes and inject scripts, eventually breaking the browser's same-origin policy (SOP) and domain-isolation mechanisms. According to researchers, the vulnerability could allow an attacker-controlled website to execute arbitrary code on the browser in the context of other domains on behalf of users, leading to a Universal Cross-site Scripting (UXSS or Universal XSS) issue. "A full exploit that would allow loading a remote hacker contr...
Google Chrome added pop-up warning to prevent users from Browser hijacking

Google Chrome added pop-up warning to prevent users from Browser hijacking

Feb 04, 2014
GOOGLE, one of the most trusted brands continuously trying to keep its products more robust and secure for keeping its users safe. Google honors vulnerability hunters under its Bug bounty program and not only that, the company also offer a huge amount of reward to hackers in ' Pwnium ' hacking competition for finding critical vulnerability. Google Chrome , Browser from Google product family, has been added with a new feature that it will warn the user whenever browser's setting get altered by any malware . Browser hijacking is the modification of browser's settings, and the term " hijacking " is used when the changes performed without the user's permission. A browser hijacker may replace the existing home page, error page, or search page with its own. These are generally used to force hits to a particular website, increasing its advertising revenue i.e. Click jacking and Adware . A hijacker uses malicious software to change your internet s...
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Operationalize Incident Response: Scale Tabletop Exercises with AEV

websiteFiligranIncident Response / Exposure Validation
Learn how to standardize, automate, and scale IR tabletop drills for compliance and team readiness.
cyber security

Humans Are the Ultimate Firewall at SANS Surge 2026

websiteSANS InstituteCybersecurity Training / Certification
Build resilience, sharpen instincts, and train like the human defender threats fear most.
A New Cryptocurrency Mining Virus is Spreading Through Facebook

A New Cryptocurrency Mining Virus is Spreading Through Facebook

May 01, 2018
If you receive a link for a video, even if it looks exciting, sent by someone (or your friend) on Facebook messenger—just don't click on it without taking a second thought. Cybersecurity researchers from Trend Micro are warning users of a malicious Chrome extension which is spreading through Facebook Messenger and targeting users of cryptocurrency trading platforms to steal their accounts' credentials. Dubbed FacexWorm , the attack technique used by the malicious extension first emerged in August last year, but researchers noticed the malware re-packed a few new malicious capabilities earlier this month. New capabilities include stealing account credentials from websites, like Google and cryptocurrency sites, redirecting victims to cryptocurrency scams, injecting miners on the web page for mining cryptocurrency, and redirecting victims to the attacker's referral link for cryptocurrency-related referral programs. It is not the first malware to abuse Facebook Messenger...
5 Things Google has Done for Gmail Privacy and Security

5 Things Google has Done for Gmail Privacy and Security

Mar 29, 2016
Over the past few years, Google has increasingly improved the online security and protections of its Gmail users. Besides two-factor authentication and HTTPS, Google has added new tools and features to Gmail that ensures users security and privacy, preventing cyber criminals and intelligence agencies to hack email accounts . 1. Enhanced State-Sponsored Attack Warnings Apple vs. FBI case urged every company to beef up the security parameters to prevent their services from not just hackers but also the law enforcement. Google for a while now has the capability to identify government-backed hackers , and notify potentially affected Gmail users so they can take action as soon as possible. Google recently announced on its blog post that it will alert Gmail users about the possibility of any state-sponsored attack by showing them a full-page warning with instructions about how to stay safe — very hard to miss or neglect. Meanwhile, the company revealed that ove...
⚡ Weekly Recap: IoT Exploits, Wallet Breaches, Rogue Extensions, AI Abuse & More

⚡ Weekly Recap: IoT Exploits, Wallet Breaches, Rogue Extensions, AI Abuse & More

Jan 05, 2026 Hacking News / Cybersecurity
The year opened without a reset. The same pressure carried over, and in some places it tightened. Systems people assume are boring or stable are showing up in the wrong places. Attacks moved quietly, reused familiar paths, and kept working longer than anyone wants to admit. This week's stories share one pattern. Nothing flashy. No single moment. Just steady abuse of trust — updates, extensions, logins, messages — the things people click without thinking. That's where damage starts now. This recap pulls those signals together. Not to overwhelm, but to show where attention slipped and why it matters early in the year. ⚡ Threat of the Week RondoDox Botnet Exploits React2Shell Flaw — A persistent nine-month-long campaign has targeted Internet of Things (IoT) devices and web applications to enroll them into a botnet known as RondoDox. As of December 2025, the activity has been observed leveraging the recently disclosed React2Shell (CVE-2025-55182, CVSS score: 10.0) flaw as an initial...
Kimsuky Using TRANSLATEXT Chrome Extension to Steal Sensitive Data

Kimsuky Using TRANSLATEXT Chrome Extension to Steal Sensitive Data

Jun 28, 2024 Cyber Espionage / Cyber Attack
The North Korea-linked threat actor known as Kimsuky has been linked to the use of a new malicious Google Chrome extension that's designed to steal sensitive information as part of an ongoing intelligence collection effort. Zscaler ThreatLabz, which observed the activity in early March 2024, has codenamed the extension TRANSLATEXT, highlighting its ability to gather email addresses, usernames, passwords, cookies, and browser screenshots. The targeted campaign is said to have been directed against South Korean academia, specifically those focused on North Korean political affairs. Kimsuky is a notorious hacking crew from North Korea that's known to be active since at least 2012, orchestrating cyber espionage and financially motivated attacks targeting South Korean entities. A sister group of the Lazarus cluster and part of the Reconnaissance General Bureau (RGB), it's also tracked under the names APT43, ARCHIPELAGO, Black Banshee, Emerald Sleet, Springtail, and Velv...
8 More Chrome Extensions Hijacked to Target 4.8 Million Users

8 More Chrome Extensions Hijacked to Target 4.8 Million Users

Aug 16, 2017
Google's Chrome web browser Extensions are under attack with a series of developers being hacked within last one month. Almost two weeks ago, we reported how unknown attackers managed to compromise the Chrome Web Store account of a developer team and hijacked Copyfish extension , and then modified it to distribute spam correspondence to users. Just two days after that incident, some unknown attackers then hijacked another popular extension ' Web Developer ' and then updated it to directly inject advertisements into the web browser of over its 1 million users. After Chris Pederick, the creator of 'Web Developer' Chrome extension that offers various web development tools to its users, reported to Proofpoint that his extension had been compromised, the security vendor analysed the issue and found further add-ons in the Chrome Store that had also been altered. According to the latest report published by the researchers at Proofpoint on Monday, the expanded ...
UAC-0226 Deploys GIFTEDCROOK Stealer via Malicious Excel Files Targeting Ukraine

UAC-0226 Deploys GIFTEDCROOK Stealer via Malicious Excel Files Targeting Ukraine

Apr 08, 2025 Browser Security / Malware
The Computer Emergency Response Team of Ukraine (CERT-UA) has revealed a new set of cyber attacks targeting Ukrainian institutions with information-stealing malware. The activity is aimed at military formations, law enforcement agencies, and local self-government bodies, particularly those located near Ukraine's eastern border, the agency said. The attacks involve distributing phishing emails containing a macro-enabled Microsoft Excel spreadsheet (XLSM), which, when opened, facilities the deployment of two pieces of malware, a PowerShell script taken from the PSSW100AVB ("Powershell Scripts With 100% AV Bypass") GitHub repository that opens a reverse shell, and a previously undocumented stealer dubbed GIFTEDCROOK. "File names and email subject lines reference relevant and sensitive issues such as demining, administrative fines, UAV production, and compensation for destroyed property," CERT-UA said. "These spreadsheets contain malicious code which, ...
⚡ THN Weekly Recap: Top Cybersecurity Threats, Tools and Tips [3 February]

⚡ THN Weekly Recap: Top Cybersecurity Threats, Tools and Tips [3 February]

Feb 03, 2025 Cybersecurity / Recap
This week, our news radar shows that every new tech idea comes with its own challenges. A hot AI tool is under close watch, law enforcement is shutting down online spots that help cybercriminals, and teams are busy fixing software bugs that could let attackers in. From better locks on our devices to stopping sneaky tricks online, simple steps are making a big difference.  Let's take a closer look at how these efforts are shaping a safer digital world. ⚡ Threat of the Week DeepSeek's Popularity Invites Scrutiny — The overnight popularity of DeepSeek, an artificial intelligence (AI) platform originating from China, has led to extensive scrutiny of its models, with several analyses finding ways to jailbreak its system and produce malicious or prohibited content. While jailbreaks and prompt injections are a persistent concern in mainstream AI products, the findings also show that the model lacks enough protections to prevent potential abuse by malicious actors . The AI chatbot ha...
Beware of Windows/MacOS/Linux Virus Spreading Through Facebook Messenger

Beware of Windows/MacOS/Linux Virus Spreading Through Facebook Messenger

Aug 24, 2017
If you came across any Facebook message with a video link sent by anyone, even your friend — just don't click on it. Security researchers at Kaspersky Lab have spotted an ongoing cross-platform campaign on Facebook Messenger, where users receive a video link that redirects them to a fake website, luring them to install malicious software. Although it is still unclear how the malware spreads, researchers believe spammers are using compromised accounts, hijacked browsers, or clickjacking techniques to spread the malicious link. The attackers make use of social engineering to trick users into clicking the video link, which purports to be from one of their Facebook friends, with the message that reads "< your friend name > Video" followed by a bit.ly link, as shown. Here's How this Cross-Platform Malware Works: The URL redirects victims to a Google doc that displays a dynamically generated video thumbnail, like a playable movie, based on the sender'...
⚡ Weekly Recap: Fortinet Exploit, Chrome 0-Day, BadIIS Malware, Record DDoS, SaaS Breach & More

⚡ Weekly Recap: Fortinet Exploit, Chrome 0-Day, BadIIS Malware, Record DDoS, SaaS Breach & More

Nov 24, 2025 Cybersecurity / Hacking News
This week saw a lot of new cyber trouble. Hackers hit Fortinet and Chrome with new 0-day bugs. They also broke into supply chains and SaaS tools. Many hid inside trusted apps, browser alerts, and software updates. Big firms like Microsoft, Salesforce, and Google had to react fast — stopping DDoS attacks, blocking bad links, and fixing live flaws. Reports also showed how fast fake news, AI risks, and attacks on developers are growing. Here's what mattered most in security this week. ⚡ Threat of the Week Fortinet Warns of Another Silently Patched and Actively Exploited FortiWeb Flaw — Fortinet has warned that a new security flaw in FortiWeb has been exploited in the wild. The medium-severity vulnerability, tracked as CVE-2025-58034, carries a CVSS score of 6.7 out of a maximum of 10.0. It has been addressed in version 8.0.2. "An Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability [CWE-78] in FortiWeb may allow an a...
I keep 200+ Browser Tabs Open, and My Computer Runs Absolutely Fine. Here’s My Secret.

I keep 200+ Browser Tabs Open, and My Computer Runs Absolutely Fine. Here's My Secret.

Jun 12, 2015
I don't know about your part, but I make heavy use of tabs. I currently have 200+ tabs open in my Google Chrome Web browser. And sometimes the number is even more. For me it's a daily thing, as I regularly open new tabs because of my habit of reading lots of stuff online, including cyber security updates, hacking news, knowledgeable articles of various categories, new recipes to cook something delicious and, of course, funny viral videos. Browsers — Everything for us, But Biggest Memory Eaters! I think you'll agree with me when I say: It's really hard to manage so many tabs on Chrome — and Firefox too. But worse still is the obstruction in the performance of your computer, as the tabs continue to run background processes and feed on your system's memory. It gets difficult to sort through them, everything slows down, and sometimes it crashes the browser itself. Doesn't it? But, I really don't face any issue while surfing on 200+ tabs at one time ...
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