access control behavior monitoring cloud computing critical infrastructure data breach digital certificate digital forensics insider threat social engineering supply chain anti-malware anti-virus APT asset authentication authorization availability blackhat blocklist botnet bug BYOD ciphertext clickjacking confidentiality cracker cryptography CVE cyberattack cyberespionage cybersecurity DDoS decrypt DLP DMZ eavesdropping encode encryption firewall grayhat hacker honeypot identity IDS information integrity IPS keylogger LAN malware multi-factor OWASP packet patch pentesting perimeter phishing PKI ransomware risk sandboxing SCADA security SIEM sniffing SPAM spyware threat trojan two-factor unauthorized virus vishing VPN vulnerability whitehat whitelist WiFi worm zombie