File and Instant Messaging Protection

IM Security protects Lync and Skype for Business Server users by providing the following scan filters.

Security Scan Filters

Scan Filter	Description
Virus Scan	Scans for viruses/malware, spyware/grayware, packers, and other security threats
File Blocking	Conserves network bandwidth, and prevents transmission of confidential information and malicious code hidden in files
Content Filtering	Monitors files and instant messages for inappropriate content
Web Reputation (URL filtering)	Protects against malicious websites
Data Loss Prevention	Monitors files and instant messages for sensitive content

The following table presents the order in which IM Security applies file and instant messaging protection.

IM Security Order of Protection Precedence

Order	File-based Protection	IM-based Protection
1	File Blocking	Content Filtering
2	Content Filtering	Web Reputation (URL filtering)
3	Virus Scan	Data Loss Prevention
4	Web Reputation (URL filtering)
5	Data Loss Prevention

IM Security uses all levels of protection to prevent files with viruses/malware, spyware/grayware, malicious URLs, unwanted content, or sensitive data from reaching intended recipients. IM Security uses Content Filtering, Web Reputation, and Data Loss Prevention filtering to prevent instant messages with unwanted content, malicious URLs, or sensitive data from reaching contacts.

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