October 31, 2025
TCP Floods
TCP floods exploit vulnerabilities in connection protocols to exhaust resources and disrupt networks. Learn how to detect, prevent, and mitigate these DDoS attacks.
DigiCert Team
Articles by DigiCert Team
October 31, 2025
Spyware
Spyware secretly monitors user activity to steal data, disrupt systems, and harm business operations. Learn how to detect, prevent, and protect against it.
October 31, 2025
Sockstress
Sockstress is a low-and-slow TCP DoS that drains server resources and evades detection. Learn its mechanics and proven defenses to protect uptime and revenue.
October 31, 2025
Scareware
Learn how scareware manipulates users with fake security alerts and how DigiCert UltraDDR Protective DNS blocks these threats before they reach your network.
October 29, 2025
Rootkits
Learn how rootkits infiltrate systems undetected and how DigiCert UltraDDR Protective DNS blocks malicious domains to keep your network secure.
October 29, 2025
Post-Quantum Cryptography
Learn how post-quantum cryptography protects data from quantum threats and how DigiCert UltraSecure helps future-proof your organization’s encryption.
October 29, 2025
Keyloggers
Learn how keyloggers steal sensitive data, their impact on businesses, and how to prevent attacks using endpoint protection, MFA, Protective DNS, and training.
October 29, 2025
Insider Threat
Learn how insider threats arise from trusted users, their impact on businesses, and key prevention strategies using policy, culture, analytics, and Protective DNS.
October 28, 2025
HTTP Cookie Attacks
Learn how HTTP cookie attacks like hijacking and poisoning work, their impact on data security, and key defenses like HTTPS, WAF, and secure cookie attributes.
October 28, 2025
What Is Fileless Malware? A Guide for Businesses
Learn how fileless malware operates in memory to evade detection, the threats it poses to businesses, and key strategies to detect and prevent these attacks.
October 28, 2025
Cross-Site Request Forgery (CSRF)
Understand CSRF: how forged requests exploit logged-in sessions, the risks, and defenses like anti-CSRF tokens, SameSite cookies, WAF, and re-auth.
October 28, 2025
Cross-Site Scripting
Understand cross-site scripting (XSS): how attacks work, real business risks, and proven defenses—validation, encoding, CSP, WAF, and secure development.