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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.

WebGL Security Risks

US-CERT is aware of reports indicating that WebGL contains multiple significant security issues. The impact of these issues includes denial of service, and cross-domain attacks. WebGL is a new web standard that is enabled by default in Firefox 4 and Google Chrome and is included in Safari.

US-CERT encourages users and administrators to review the Context report and update their systems as necessary to help mitigate the risks.

Microsoft Releases May Security Bulletin

Microsoft has released updates to address vulnerabilities in Microsoft Windows and Microsoft Office as part of the Microsoft Security Bulletin Summary for May 2011. These vulnerabilities may allow an attacker to execute arbitrary code.

US-CERT encourages users and administrators to review the bulletin and follow best-practice security policies to determine which updates should be applied.

Apple Releases iOS 4.3.3

Apple released iOS 4.3.3 for the iPhone, iPod Touch, and iPad to address location tracking history capabilities. This update specifically addresses two bugs in iOS that resulted in the devices storing historical location data for too long.

US-CERT encourages users and administrators to review Apple article DL1358 and update to iOS 4.3.3.

Microsoft Releases Advance Notification for May Security Bulletin

Microsoft has issued a Security Bulletin Advance Notification indicating its May release will contain two bulletins. One of these bulletins will have the severity rating of critical and will be for Microsoft Windows. The remaining bulletin will have the severity rating of important and will be for Microsoft Office. Release of these bulletins is scheduled for Tuesday, May 10, 2011.

US-CERT will provide additional information as it becomes available.

Osama Bin Laden's Death Email Scams, Fake Antivirus, and Phishing Attack Warning

Users should be aware of potential email scams, fake antivirus, and phishing attacks regarding Osama Bin Laden's death. Email scams may contain links or attachments that may direct users to malicious websites. Fake antivirus attacks may come in the form of pop-ups that flash security warnings and ask the user for credit card information. Phishing emails and websites requesting personal information commonly appear after this type of news.

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

Video Game Phishing

US-CERT is aware of reports that some users on the Xbox 360 video game system are receiving potential phishing attempts through an in-game messaging service. In-game message phishing is not a Microsoft issue and has nothing to do with Xbox LIVE. Games are products of third party developers that are playable on Xbox LIVE and other gaming systems.

Microsoft has posted a service alert on the Xbox LIVE status page regarding this issue.

US-CERT encourages users to take the following measures to protect themselves from these types of phishing attacks:

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