Antivirus online

Panda Antivirus:
http://www.pandasoftware.com/activescan


BitDefender:
http://www.bitdefender.com/scan8/

Trend Micro:
http://housecall.trendmicro.com/housecall/start_corp.asp

Virus Scan:
http://us.mcafee.com/root/mfs/default.asp

Eetrust Antivirus:
http://www3.ca.com/securityadvisor/virusinfo/scan.aspx

Freedom-VirusCenter:
http://www.freedom.net/viruscenter/

Analisis de Archivos

www.virustotal.com

http://www.kaspersky.com/scanforvirus

Antitroyanos online

http://www.windowsecurity.com/trojanscan/

http://scan.sygatetech.com/pretrojanscan.html

Antiespias online

Trend Micro AntiSpyware:
http://www.trendmicro.com/spyware-scan/

Sunbelt Antispyware:
http://www.sunbelt-software.com/dell/scan.cfm

SpywareGuide:
http://www.spywareguide.com/txt_onlinescan.html

Test de puertos

Securitymetric:
http://www.securitymetrics.com/portscanlogic.fadp

Upseros:
http://www.upseros.com/portscan.php

Fuente , Tio Google