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The US-CERT Current Activity web page is a regularly updated summary of the most frequent, high-impact types of security incidents currently being reported to the US-CERT.

Mozilla Releases Firefox 3.6.2

The Mozilla Foundation has released Firefox 3.6.2 to address multiple security issues, including a critical vulnerability that may allow a remote attacker to execute arbitrary code.

US-CERT encourages users and administrators to do the following to help mitigate the risks:

Additional information regarding this vulnerability, including a workaround for users who cannot upgrade, can be found in the Vulnerability Notes Database.

CA Releases Updates for ARCserve Backup

CA has released updates to address vulnerabilities in the version of Java JRE bundled with ARCserve Backup. These vulnerabilities in Java JRE may allow an attacker to execute arbitrary code, bypass security restrictions, cause a denial-of-service condition, or obtain sensitive information.

US-CERT encourages users and administrators to review the CA security notice CA20100318-01 and apply any necessary updates to help mitigate the risks.

Zeus Trojan Campaign Warning

US-CERT is aware of public reports of malicious code circulating via spam email messages impersonating the Department of Homeland Security (DHS). The attacks arrive via unsolicited email messages that may contain subject lines related to DHS or other government activity. These messages may contain a link or attachment. If users click on this link or open the attachment, they may be infected with malicious code, including the Zeus Trojan.

US-CERT encourages users and administrators to take the following measures to protect themselves:

  • Do not follow unsolicited web links or attachments in email messages.
  • Maintain up-to-date antivirus software.
  • Refer to Cyber Security Tip ST04-014 - Avoiding Social Engineering and Phishing Attacks
  • Refer to the Recognizing and Avoiding Email Scams (pdf) document for more information on avoiding email scams.

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