Cisco Cisco Email Security Appliance C160 Mode D'Emploi
C H A P T E R
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Cisco IronPort AsyncOS 7.5 for Email Configuration Guide
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Outbreak Filters
Low-volume, targeted email attacks such as phishing messages, scams, and
malware links are on the rise while viruses spread through attachments are on the
decline. The messages used for these non-viral attacks are complex and evolving;
they are professional-looking messages that use social engineering tricks,
including using the recipient’s information, in an attempt to trick the recipient into
clicking custom URLs that point to phishing and malware websites. These URLs
can be unique for each recipient or a small group of recipients and these websites
are online only for a short period of time and are unknown to web security
services. All of these factors make these small scale, non-viral outbreaks more
difficult to detect than widespread virus outbreaks and spam campaigns. Cisco
IronPort’s Outbreak Filters feature protects your users from this growing trend of
targeted attacks in addition to new virus outbreaks.
malware links are on the rise while viruses spread through attachments are on the
decline. The messages used for these non-viral attacks are complex and evolving;
they are professional-looking messages that use social engineering tricks,
including using the recipient’s information, in an attempt to trick the recipient into
clicking custom URLs that point to phishing and malware websites. These URLs
can be unique for each recipient or a small group of recipients and these websites
are online only for a short period of time and are unknown to web security
services. All of these factors make these small scale, non-viral outbreaks more
difficult to detect than widespread virus outbreaks and spam campaigns. Cisco
IronPort’s Outbreak Filters feature protects your users from this growing trend of
targeted attacks in addition to new virus outbreaks.
This chapter contains the following sections:
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