Related by context. Frequent words. (Click for all words.) 43 algorithm 43 heuristic 42 bot 42 classifier 42 captcha 41 trojan 39 fuzzy logic 39 phisher 39 keystroke logging 38 algorithmically 38 ransomware 37 binary code 37 Vishing 37 rootkit 36 CAPTCHAs 36 spellchecker 36 phish 36 document.write 36 Bayesian 35 computational methods 35 worm 35 cyber crooks 35 iFrame 35 executable file 35 cache poisoning 35 keylogging 35 mathematical algorithms 35 Downadup 34 algorithmic 34 spammer 34 Java applet 34 bots 34 wavefront 34 malware 34 Rootkit 34 Googlebot 34 Schmugar 34 heuristics 33 optimizer 33 keylogger 33 Srizbi 33 Algorithm 33 algorithms 33 shortened URLs 33 Boolean 33 iframe 33 malicious 33 CAPTCHA 33 script kiddies 33 Koobface 33 Storm Worm 33 Google PageRank 33 rootkits 33 executable code 33 trojan horse 33 spammers 33 spider 32 technique 32 spidering 32 robots.txt file 32 ping 32 phishing 32 parser 32 ZeuS 32 algo 32 iteratively 32 crimeware 32 Sobig.F 31 logistic regression 31 Mydoom 31 Teoma 31 proprietary algorithm 31 Bagle 31 pattern recognition 31 viruses 31 backlink 31 recursive 31 XSS 31 honeypots 30 hexadecimal 30 keyword 30 encryption algorithm 30 crawler 30 MSBlast 30 MyDoom 30 Coreflood 30 malicious hacker 30 artificial intelligence 30 checksum 30 spam 30 hostname 30 Bots 30 voxel 30 ontology 30 Netsky 30 Worm 30 gmail 30 Parameter 29 trojans 29 PageRank 29 spear phishing