Security News

Microsoft Defender Antivirus will now protect unpatched on-premises Exchange servers from ongoing attacks by automatically mitigating the actively exploited CVE-2021-26855 vulnerability. The Microsoft Defender automatic protection from active attacks targeting unpatched Exchange servers works by breaking the attack chain.

Microsoft has released Exchange On-Premises Mitigation Tool, which quickly performs the initial steps for mitigating the ProxyLogon flaw on any Exchange server and attempts to remediate found compromises. "This tool is not a replacement for the Exchange security update but is the fastest and easiest way to mitigate the highest risks to internet-connected, on-premises Exchange Servers prior to patching," Microsoft explained.

Microsoft on Monday released a one-click mitigation software that applies all the necessary countermeasures to secure vulnerable environments against the ongoing widespread ProxyLogon Exchange Server cyberattacks. Called Exchange On-premises Mitigation Tool, the PowerShell-based script serves to mitigate against current known attacks using CVE-2021-26855, scan the Exchange Server using the Microsoft Safety Scanner for any deployed web shells, and attempt to remediate the detected compromises.

Microsoft's scramble to address the fallout from the zero-day attacks against on-prem Exchange Server installations continued this week with the release of a one-click mitigation tool help businesses contain the damage. The new Exchange On-premises Mitigation Tool is aimed at companies without dedicated security or IT teams to manage patching and post-incident forensics.

Microsoft has released a one-click Exchange On-premises Mitigation Tool tool to allow small business owners to easily mitigate the recently disclosed ProxyLogon vulnerabilities. This month, Microsoft disclosed that four zero-day vulnerabilities were being actively used in attacks against Microsoft Exchange.

Attackers can abuse a wide range of Window legitimate tools, including but not limited to Microsoft Defender, Windows Update, and even the Windows Finger command. While being legitimately used by thousands of admins each day for managing their organizations' Azure fleets, their capabilities can also be used for malicious purposes, including circumventing network defense lines.

Microsoft on Friday released alternative mitigation measures for organizations who have not been able to immediately apply emergency out-of-band patches released earlier this week that address vulnerabilities being exploited to siphon e-mail data from corporate Microsoft Exchange servers. "These mitigations are not a remediation if your Exchange servers have already been compromised, nor are they full protection against attack," Microsoft warned in a blog post.

Broad propaganda penetration is achieved by following a specific set of steps, according to a new IDC Government Insights report. The most successful generators of false news use large networks of pop-up news sites and bot networks to help echo sentiments and increase pass-along rates.

With this acquisition, SentinelOne will be able to ingest, correlate, search, and action data from any source, delivering the industry's most advanced integrated XDR platform for realtime threat mitigation across the enterprise and cloud. Through this acquisition, SentinelOne sets the bar for the XDR market and solves one of the biggest challenges in delivering a fully integrated XDR platform: ingesting and actioning all operational data in realtime from a security-first perspective.

These bots work to expose and take advantage of vulnerabilities at a rapid pace, stealing critical personal and financial data, scraping intellectual property, installing malware, contributing to DDoS attacks, distorting web analytics and damaging SEO. Luckily, tools, approaches, solutions and best practices exist to help companies combat these malicious bots, but cybercriminals have not been resting on their laurels and are constantly working on ways to bypass the protections used to block bot activity. It is important to regularly review what tactics you are using to combat bot traffic and analyze your success rate, as this process will help you understand whether your mitigation approach has already been figured out and worked around by cybercriminals.