Security News

As organizations shifted focus to support remote work and business continuity amid the challenges of 2020, web application security suffered, according to an Invicti Security report. Medium-severity vulnerabilities such as denial-of-service, host header injection, and directory listing, remained present in 63% of web apps in 2020, holding flat from 2019.

New DNS vulnerabilities have the potential to impact millions of devicesForescout Research Labs, in partnership with JSOF, disclosed a new set of DNS vulnerabilities, dubbed NAME:WRECK. FBI removes web shells from hacked Microsoft Exchange serversAuthorities have executed a court-authorized operation to copy and remove malicious web shells from hundreds of vulnerable on-premises versions of Microsoft Exchange Server software in the United States. The benefits of cyber threat intelligenceIn this Help Net Security podcast, Maurits Lucas, Director of Intelligence Solutions at Intel 471, discusses the benefits of cyber threat intelligence.

We look at the big-money hacks from the 2021 Pwn2Own competition. We investigate the difficulties of hiring an assassin via the dark web.

Users attempting to download the alleged document templates are redirected, without their knowledge, to a malicious website that hosts the malware. "Once the RAT is on the victim's computer and activated, the threat actors can send commands and upload additional malware to the infected system, such as ransomware, a credential stealer, a banking trojan, or simply use the RAT as a foothold into the victim's network," researchers from eSentire said in a write-up published on Tuesday.

The Feds have cleared malicious web shells from hundreds of vulnerable computers in the United States that had been compromised via the now-infamous ProxyLogon Microsoft Exchange vulnerabilities. "Many infected system owners successfully removed the web shells from thousands of computers," explained the Department of Justice, in a Tuesday announcement.

Authorities have executed a court-authorized operation to copy and remove malicious web shells from hundreds of vulnerable on-premises versions of Microsoft Exchange Server software in the United States. Through January and February 2021, certain hacking groups exploited zero-day vulnerabilities in Microsoft Exchange Server software to access email accounts and place web shells for continued access.

FBI agents executed a court-authorized cyber operation to delete malicious web shells from hundreds of previously hacked Microsoft Exchange servers in the United States, unbeknownst to their owners, the U.S. Department of Justice said Tuesday. After a wave of major in-the-wild zero-day attacks against Exchange Server installations that occurred globally in January, savvy organizations scrambled to lock down vulnerable Microsoft email servers and remove web shells that were installed by attackers.

The FBI deleted web shells installed by criminals on hundreds of Microsoft Exchange servers across the United States, it was revealed on Tuesday. "Although many infected system owners successfully removed the web shells from thousands of computers, others appeared unable to do so, and hundreds of such web shells persisted unmitigated," the Justice Department noted in an announcement.

More than 100,000 web pages hosted by Google Sites are being used to trick netizens into opening business documents booby-trapped with a remote-access trojan that takes over victims' PCs and hands control to miscreants. Infosec outfit eSentire on Tuesday said it has noted a wave of so-called search redirection shenanigans, in which people Googling for business forms and the like are shown links to web pages published via Google Sites - a Google-hosted web service - that offer a download of whatever materials they were looking for.

A court-approved FBI operation was conducted to remove web shells from compromised US-based Microsoft Exchange servers without first notifying the servers' owners. On March 2nd, Microsoft released a series of Microsoft Exchange security updates for vulnerabilities actively exploited by a hacking group known as HAFNIUM. These vulnerabilities are collectively known as ProxyLogon and were used by threat actors in January and February to install web shells on compromised Exchange servers.