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Microsoft on Tuesday rolled out  security patches  to contain a total of 71 vulnerabilities in Microsoft Windows and other software, including a fix for an actively exploited privilege escalation vulnerability that could be exploited in conjunction with remote code execution bugs to take control over vulnerable systems. Two of the addressed security flaws are rated Critical, 68 are rated Important, and one is rated Low in severity, with three of the issues listed as publicly known at the time of the release. The four zero-days are as follows — CVE-2021-40449  (CVSS score: 7.8) - Win32k Elevation of Privilege Vulnerability CVE-2021-41335  (CVSS score: 7.8) - Windows Kernel Elevation of Privilege Vulnerability CVE-2021-40469  (CVSS score: 7.2) - Windows DNS Server Remote Code Execution Vulnerability CVE-2021-41338  (CVSS score: 5.5) - Windows AppContainer Firewall Rules Security Feature Bypass Vulnerability At the top of the list is CVE-2021-40449, a...

The maintainers of LibreOffice and OpenOffice have shipped security updates to their productivity software to remediate multiple vulnerabilities that could be weaponized by malicious actors to alter documents to make them appear as if they are digitally signed by a trusted source. The list of the three flaws is as follows — CVE-2021-41830  /  CVE-2021-25633  - Content and Macro Manipulation with Double Certificate Attack CVE-2021-41831  /  CVE-2021-25634  - Timestamp Manipulation with Signature Wrapping CVE-2021-41832  /  CVE-2021-25635  - Content Manipulation with Certificate Validation Attack Successful exploitation of the vulnerabilities could permit an attacker to  manipulate the timestamp  of signed ODF documents, and worse,  alter the contents  of a document or  self-sign a document  with an untrusted signature, which is then tweaked to change the  signature algorithm  to an invalid or un...

Code hosting platform GitHub has  revoked  weak SSH authentication keys that were generated via the GitKraken git GUI client due to a vulnerability in a third-party library that increased the likelihood of duplicated SSH keys. As an added precautionary measure, the Microsoft-owned company also said it's building safeguards to prevent vulnerable versions of GitKraken from adding newly generated weak keys. The problematic dependency, called " keypair ," is an open-source SSH key generation library that allows users to create RSA keys for authentication-related purposes. It has been found to impact  GitKraken  versions 7.6.x, 7.7.x, and 8.0.0, released between May 12, 2021, and September 27, 2021. The flaw — tracked as CVE-2021-41117 (CVSS score: 8.7) — concerns a bug in the pseudo-random number generator used by the library, resulting in the creation of a weaker form of public SSH keys, which, owing to their low entropy — i.e., the measure of r...

I had the honor of hosting the first episode of the Xposure Podcast live from Xposure Summit 2025. And I couldn't have asked for a better kickoff panel: three cybersecurity leaders who don't just talk security, they live it. Let me introduce them. Alex Delay , CISO at IDB Bank, knows what it means to defend a highly regulated environment. Ben Mead , Director of Cybersecurity at Avidity Biosciences, brings a forward-thinking security perspective that reflects the innovation behind Avidity's targeted RNA therapeutics. Last but not least, Michael Francess , Director of Cybersecurity Advanced Threat at Wyndham Hotels and Resorts, leads the charge in protecting the franchise. Each brought a unique vantage point to a common challenge: applying Continuous Threat Exposure Management (CTEM) to complex production environments. Gartner made waves in 2023 with a bold prediction: organizations that prioritize CTEM will be three times less likely to be breached by 2026. But here's the kicker -...

Microsoft on Monday revealed that its Azure cloud platform mitigated a 2.4 Tbps distributed denial-of-service (DDoS) attack in the last week of August targeting an unnamed customer in Europe, surpassing a  2.3 Tbps attack  stopped by Amazon Web Services in February 2020. "This is 140 percent higher than  2020's 1 Tbps attack  and higher than any network volumetric event previously detected on Azure," Amir Dahan, senior program manager for Azure Networking,  said  in a post, calling it a " UDP reflection " lasting for about 10 minutes. Reflected amplification attacks are a type of denial of service attacks wherein a threat actor takes advantage of the connectionless nature of UDP protocol with spoofed requests so as to overwhelm a target server or network with a flood of packets, causing disruption or rendering the server and its surrounding infrastructure unavailable. The attack is said to have originated from a botnet of approximately 70,000 compromi...

An emerging threat actor likely supporting Iranian national interests has been behind a password spraying campaign targeting U.S., E.U., and Israeli defense technology companies, with additional activity observed against regional ports of entry in the Persian Gulf as well as maritime and cargo transportation companies focused in the Middle East. Microsoft is tracking the hacking crew under the moniker DEV-0343 . The intrusions, which were first observed in late July 2021, are believed to have targeted more than 250 Office 365 tenants, fewer than 20 of which were successfully compromised following a  password spray  attack — a type of brute force attack wherein the same password is cycled against different usernames to log into an application or a network in an effort to avoid account lockouts. Indications thus far allude to the possibility that the activity is part of an intellectual property theft campaign aimed at government partners producing military-grade radars, dro...

Ukrainian law enforcement authorities on Monday disclosed the arrest of a hacker responsible for the creation and management of a "powerful botnet" consisting of over 100,000 enslaved devices that was used to carry out distributed denial-of-service (DDoS) and spam attacks on behalf of paid customers. The unnamed individual, from the Ivano-Frankivsk region of the country, is also said to have leveraged the automated network to detect vulnerabilities in websites and break into them as well as stage brute-force attacks in order to guess email passwords. The Ukrainian police agency said it conducted a raid of the suspect's residence and seized their computer equipment as evidence of illegal activity. "He looked for customers on the closed forums and Telegram chats and payments were made via blocked electronic payment systems," the Security Service of Ukraine (SSU)  said  in a press statement. The payments were facilitated via WebMoney, a Russian money transfer p...

Apple on Monday released a security update for iOS and iPad to address a critical vulnerability that it says is being exploited in the wild, making it the 17th zero-day flaw the company has addressed in its products since the start of the year. The weakness, assigned the identifier  CVE-2021-30883 , concerns a memory corruption issue in the "IOMobileFrameBuffer" component that could allow an application to execute arbitrary code with kernel privileges. Crediting an anonymous researcher for reporting the vulnerability, Apple said it's "aware of a report that this issue may have been actively exploited." Technical specifics about the flaw and the nature of the attacks remain unavailable as yet, as is the identity of the threat actor, so as to allow a majority of the users to apply the patch and prevent other adversaries from weaponizing the vulnerability. The iPhone maker said it addressed the issue with improved memory handling. But soon after the advisory w...