A new report from the Acronis Threat Research Unit has uncovered a vulnerability in Microsoft Exchange Online settings that could enable email spoofing attacks.
This issue primarily affects users with a hybrid configuration of on-premises Exchange and Exchange Online, and those utilizing third-party email security solutions. In July 2023, Microsoft introduced a major change in how it handles DMARC (Domain-based Message Authentication, Reporting, and Conformance) within Microsoft Exchange. This update was intended to bolster security by enhancing how email servers verify incoming emails’ legitimacy. Unfortunately, despite clear guidance from Microsoft, a considerable number of users have yet to implement these security measures.
Read more…
Source: TechRadar News
Related:
- Air-gapped PCs vulnerable to data theft via power supply radiation
December 10, 2022
A new attack method named COVID-bit uses electromagnetic waves to transmit data from air-gapped systems, which are isolated from the internet, over a distance of at least two meters (6.5 ft), where it’s captured by a receiver. The information emanating from the isolated device could be picked up by a nearby smartphone or laptop, even if ...
- Antivirus and EDR solutions tricked into acting as data wipers
December 9, 2022
A security researcher has found a way to exploit the data deletion capabilities of widely used endpoint detection and response (EDR) and antivirus (AV) software from Microsoft, SentinelOne, TrendMicro, Avast, and AVG to turn them into data wipers. Wipers are a special type of destructive malware that purposely erases or corrupts data on compromised systems and ...
- CISA Releases Three Industrial Control Advisories
December 8, 2022
CISA has released three (3) Industrial Control Systems (ICS) advisories on 08 December 2022. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS. CISA encourages users and administrators to review the newly released ICS advisories for technical details and mitigations. Read more… Source: U.S. Cybersecurity and Infrastructure Security Agency Related story: CISA Adds One ...
- Cisco discloses high-severity IP phone bug with exploit code
December 8, 2022
Cisco has disclosed today a high-severity vulnerability affecting the latest generation of its IP phones and exposing them to remote code execution and denial of service (DoS) attacks. The company warned on Thursday that its Product Security Incident Response Team (PSIRT) is “aware that proof-of-concept exploit code is available” and that the “vulnerability has been publicly ...
- Internet Explorer 0-day exploited by North Korean actor APT37
December 7, 2022
To protect our users, Google’s Threat Analysis Group (TAG) routinely hunts for 0-day vulnerabilities exploited in-the-wild. This blog will describe a 0-day vulnerability, discovered by TAG in late October 2022, embedded in malicious documents and used to target users in South Korea. TAG attributes this activity to a group of North Korean government-backed actors known ...
- CVE-2022-3786 and CVE-2022-3602: OpenSSL X.509 Buffer Overflows
December 2, 2022
On November 1, 2022, OpenSSL released a security advisory describing two high severity vulnerabilities within the OpenSSL library (CVE-2022-3786 and CVE-2022-3602). OpenSSL versions from 3.0.0 – 3.0.6 are vulnerable, with 3.0.7 containing the patch for both vulnerabilities. OpenSSL 1.1.1 and 1.0.2 are not affected by this issue. In the days leading up to the security advisory, ...