Challenge-response
System demanding sender confirmation before delivering email
Anti-malware
Anti-spyware
Anti-virus
Bayesian filter
Behaviour blocker
Blacklist
CAPTCHA
Content filtering
Demilitarized Zone
DKIM
Encryption
Firewall
Greylisting
Heuristics
Intrusion detection system
Intrusion prevention system
Layered defence
MAAWG
Markovian discrimination
OCR
On-access scanning
Patch
Patch Tuesday
Public Key Cryptography
Service pack
SPF
Spam filter
URL filtering
Walled garden
Whitelisting
See also
Glossary
Resources
Poll
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Virus Bulletin
In this month's magazine:- Co-operation is the only way
- XXX racted
- Your filters are bypassed: Rustock.C in the kernel
- Family matters
- The Ottawa rules
- DriveSentry Desktop 3.1/3.2 & GoAnywhere 1.0.2/2.0
- The problem of backscatter – part 3

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