Knowledge Base

QR code phishing (quishing) attacks surged 587% in 2025, now comprising 12% of all phishing attacks. The FBI warned in January 2026 that North Korean hackers are using malicious QR codes in spearphishing campaigns. Learn how to identify fake QR codes, understand common attack scenarios, and safely scan and generate QR codes.

Ransomware uses AES encryption to lock all your files and demands cryptocurrency for the key. Global ransomware losses exceeded $10 billion in 2025, with hospitals, schools, and small businesses among the hardest-hit targets. This guide explains how ransomware works technically, the most common entry points, the 3-2-1 backup rule, and what to do if you're hit.

Third-party cookies are dying, but advertisers found a harder-to-block replacement: browser fingerprinting. It stores nothing on your device — it just collects your browser's configuration to track you across websites. This guide explains how fingerprinting works, the dimensions it uses, the privacy threat it poses, and the realistic limits of current defenses.

Phishing is the most prevalent form of cybercrime, with fake bank, government, and e-commerce sites stealing credentials and money every day. This guide explains phishing types, how to spot fake URLs, the psychology behind social engineering, and practical steps to protect your accounts and personal data.

AI-generated content has lowered the barrier for creating fake faces, voices, and images to almost zero. Deepfake scams and disinformation incidents are surging. This guide explains how deepfakes work, visual and audio tell-tale signs, the C2PA content provenance standard, and practical steps to protect yourself.

Every photo taken with your smartphone may contain your GPS coordinates, capture time, and device model — hidden in EXIF metadata. Once uploaded online, anyone can read your exact location. This guide explains what EXIF data is, what sensitive information it contains, how to strip it before sharing, and common privacy leak scenarios.

Apple, Google, and Microsoft are aggressively pushing Passkeys to replace traditional passwords. Built on public-key cryptography, Passkeys are inherently phishing-resistant and require no memorization. This guide explains how Passkeys work, their core differences from passwords, current adoption status, and how to manage your accounts securely during the transition.

Good typography is invisible — readers feel comfortable without knowing why. Bad typography makes readers uncomfortable without knowing why either. This guide covers font categories, line height and letter spacing principles, CJK mixed-text rules, contrast ratios, and font pairing strategies — everything you need to design readable web content.

Short URLs hide their real destination, giving phishing attacks, malware distribution, and scam pages perfect cover. This guide explains how short URLs are abused, how to preview the real URL before clicking, how to spot malicious links, and best practices for using URL shorteners safely.