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DMARC  is a global standard for email authentication. It allows senders to verify that the email really comes from whom it claims to come from. This helps curb spam and phishing attacks, which are among the most prevalent cybercrimes of today. Gmail, Yahoo, and many other large email providers have implemented DMARC and praised its benefits in recent years. If your company's domain name is bankofamerica.com, you do not want a cyber attacker to be able to send emails under that domain. This puts your brand reputation at risk and could potentially spread financial malware. The DMARC standard prevents this by checking whether emails are sent from an expected IP address or domain. It specifies how domains can be contacted if there are authentication or migration issues and provides forensic information so senders can monitor email traffic and quarantine suspicious emails. What is a Phishing Attack? Phishing is an attempt by cybercriminals to trick victims into giving away sensitive...

Cybersecurity researchers have charted the evolution of Jupyter, a .NET infostealer known for singling out healthcare and education sectors, which make it exceptional at defeating most endpoint security scanning solutions. The new delivery chain, spotted by  Morphisec  on September 8, underscores that the malware has not just continued to remain active but also showcases "how threat actors continue to develop their attacks to become more efficient and evasive." The Israeli company said it's currently investigating the scale and scope of the attacks. First  documented  in November 2020, Jupyter (aka Solarmarker) is likely Russian in origin and primarily targets Chromium, Firefox, and Chrome browser data, with additional capabilities that allow for full backdoor functionality, including features to siphon information and upload the details to a remote server and download and execute further payloads. Forensic evidence gathered by Morphisec shows that multiple versi...

Google on Friday rolled out an emergency security patch to its Chrome web browser to address a security flaw that's known to have an exploit in the wild. Tracked as  CVE-2021-37973 , the vulnerability has been described as  use after free  in  Portals API , a web page navigation system that enables a page to show another page as an inset and "perform a seamless transition to a new state, where the formerly-inset page becomes the top-level document." Clément Lecigne of Google Threat Analysis Group (TAG) has been credited with reporting the flaw. Additional specifics pertaining to the weakness have not been disclosed in light of active exploitation and to allow a majority of the users to apply the patch, but the internet giant said it's "aware that an exploit for CVE-2021-37973 exists in the wild." The update arrives a day after Apple moved to close an actively exploited security hole in older versions of iOS and macOS ( CVE-2021-30869 ), which the TAG no...

Network security company SonicWall has addressed a critical security vulnerability affecting its Secure Mobile Access (SMA) 100 series appliances that can permit remote, unauthenticated attackers to gain administrator access on targeted devices remotely. Tracked as  CVE-2021-20034 , the arbitrary file deletion flaw is rated 9.1 out of a maximum of 10 on the CVSS scoring system, and could allow an adversary to bypass path traversal checks and delete any file, causing the devices to reboot to factory default settings. "The vulnerability is due to an improper limitation of a file path to a restricted directory potentially leading to arbitrary file deletion as 'nobody,'" the San Jose-based firm  noted  in an advisory published Thursday. "There is no evidence that this vulnerability is being exploited in the wild." SonicWall credited Wenxu Yin of Alpha Lab, Qihoo 360, with reporting the security shortcoming, which impacts SMA 100 Series — SMA 200, SMA 210, ...

A new advanced persistent threat (APT) has been behind a string of attacks against hotels across the world, along with governments, international organizations, engineering companies, and law firms. Slovak cybersecurity firm ESET codenamed the cyber espionage group  FamousSparrow , which it said has been active since at least August 2019, with victims located across Africa, Asia, Europe, the Middle East, and the Americas, spanning several countries such as Burkina Faso, Taiwan, France, Lithuania, the U.K., Israel, Saudi Arabia, Brazil, Canada, and Guatemala. Attacks mounted by the group involve exploiting known vulnerabilities in server applications such as SharePoint and Oracle Opera, in addition to the  ProxyLogon  remote code execution vulnerability in Microsoft Exchange Server that came to light in March 2021, making it the  latest threat actor  to have had access to the exploit before details of the flaw became public. According to ESET, intrusions ex...