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Looking for ways to unlock and read the content of an encrypted PDF without knowing the password? Well, that's now possible, sort of—thanks to a novel set of attacking techniques that could allow attackers to access the entire content of a password-protected or encrypted PDF file, but under some specific circumstances. Dubbed PDFex , the new set of techniques includes two classes of attacks that take advantage of security weaknesses in the standard encryption protection built into the Portable Document Format, better known as PDF. To be noted, the PDFex attacks don't allow an attacker to know or remove the password for an encrypted PDF; instead, enable attackers to remotely exfiltrate content once a legitimate user opens that document. In other words, PDFex allows attackers to modify a protected PDF document, without having the corresponding password, in a way that when opened by someone with the right password, the file will automatically send out a copy of the decry...

If you have an account with the Comodo discussion board and support forums, also known as ITarian Forum, you should change your password immediately. Cybersecurity company Comodo has become one of the major victims of a recently disclosed vBulletin 0-day vulnerability , exposing login account information of over nearly 245,000 users registered with the Comodo Forums websites. In a brief security notice published earlier today, Comodo admitted the data breach, revealing that an unknown attacker exploited the vBulletin vulnerability (CVE-2019-16759) and potentially gained access to Comodo Forums database. It's worth noting that Comodo forum was hacked on September 29, almost four days after vBulletin developers released a patch to let administrators address the vulnerability, but the company failed to apply the patches on time. As The Hacker News broke the news last week, an anonymous hacker publicly disclosed details of a critical then-unpatched vulnerability in vBulleti...

The infamous eGobbler hacking group that surfaced online earlier this year with massive malvertising campaigns has now been caught running a new campaign exploiting two browser vulnerabilities to show intrusive pop-up ads and forcefully redirect users to malicious websites. To be noted, hackers haven't found any way to run ads for free; instead, the modus operandi of eGobbler attackers involves high budgets to display billions of ad impressions on high profile websites through legit ad networks. But rather than relying on visitors' willful interaction with advertisements online, eGobbler uses browser (Chrome and Safari) exploits to achieve maximum click rate and successfully hijack as many users' sessions as possible. In its previous malvertising campaign, eGobbler group was exploiting a then-zero-day vulnerability (CVE-2019-5840) in Chrome for iOS back in April , which allowed them to successfully bypass browser's built-in pop-up blocker on iOS devices and hij...

AI agents promise to automate everything from financial reconciliations to incident response. Yet every time an AI agent spins up a workflow, it has to authenticate somewhere; often with a high-privilege API key, OAuth token, or service account that defenders can't easily see. These "invisible" non-human identities (NHIs) now outnumber human accounts in most cloud environments, and they have become one of the ripest targets for attackers. Astrix's Field CTO Jonathan Sander put it bluntly in a recent Hacker News webinar : "One dangerous habit we've had for a long time is trusting application logic to act as the guardrails. That doesn't work when your AI agent is powered by LLMs that don't stop and think when they're about to do something wrong. They just do it." Why AI Agents Redefine Identity Risk Autonomy changes everything: An AI agent can chain multiple API calls and modify data without a human in the loop. If the underlying credential is exposed or overprivileged, each addit...

The greatest threat facing most nations is no longer a standing army. It's a hacker with a computer who can launch a crippling cyber attack from thousands of miles away—potentially taking down everything from server farms to entire power grids with a few lines of code. So it should come as no surprise that virtually every major company in both the public and private sector—as well as national security teams and government agencies—are looking for talented and trained professionals who can help them evade these cyber threats. Although it may seem a bit counterintuitive, the only person who can fight back against a hacker is another hacker. Known as ethical or "white hat" hackers, these intrepid cyber warriors are the first and most important line of defense against these nefarious hackers, and they're being paid handsomely for their services. The Complete White Hat Hacker Certification Bundle will teach you everything you need to know in order to join their r...

A critical security vulnerability has been discovered and fixed in the popular open-source Exim email server software, which could allow a remote attacker to simply crash or potentially execute malicious code on targeted servers. Exim maintainers today released an urgent security update— Exim version 4.92.3 —after publishing an early warning two days ago, giving system administrators an early head-up on its upcoming security patches that affect all versions of the email server software from 4.92 up to and including then-latest version 4.92.2. Exim is a widely used, open source mail transfer agent (MTA) developed for Unix-like operating systems like Linux, Mac OSX or Solaris, which runs almost 60 percent of the Internet's email servers today for routing, delivering and receiving email messages. This is the second time in this month when the Exim maintainers have released an urgent security update. Earlier this month, the team patched a critical remote code execution flaw (...

A Pakistani hacker who previously made headlines earlier this year for selling almost a billion user records stolen from nearly 45 popular online services has now claimed to have hacked the popular mobile social game company Zynga Inc . With a current market capitalization of over $5 billion, Zynga is one of the world's most successful social game developers with a collection of hit online games—including FarmVille, Words With Friends, Zynga Poker, Mafia Wars, and Café World—with over a billion players worldwide. Going by the online alias Gnosticplayers, the serial hacker told The Hacker News that this time, he managed to breach " Words With Friends ," a popular Zynga-developed word puzzle game, and unauthorisedly access a massive database of more than 218 million users. According to the hacker, the data breach affected all Android and iOS game players who installed and signed up for the 'Words With Friends' game on and before 2nd September this year. ...

Remember the Simjacker vulnerability? Earlier this month, we reported about a critical unpatched weakness in a wide range of SIM cards, which an unnamed surveillance company has actively been exploiting in the wild to remotely compromise targeted mobile phones just by sending a specially crafted SMS to their phone numbers. If you can recall, the Simjacker vulnerability resides in a dynamic SIM toolkit, called the S@T Browser , which comes installed on a variety of SIM cards, including eSIM, provided by mobile operators in at least 30 countries. Now, it turns out that the S@T Browser is not the only dynamic SIM toolkit that contains the Simjacker issue which can be exploited remotely from any part of the world without any authorization—regardless of which handsets or mobile operating systems victims are using. WIB SIM ToolKit Also Leads To SimJacker Attacks Following the Simjacker revelation, Lakatos, a researcher at Ginno Security Lab, reached out to The Hacker News earli...