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HN Hacker News · · Security

Payments Canada announces launch of Canada's Real-Time Rail (RTR) payment system

573 points and 329 comments on Hacker News.

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PCs, Storage & Backups

NTFS vs exFAT vs FAT32 vs APFS vs ext4: File Systems Explained Simply

What a file system is, the real differences between NTFS, exFAT, FAT32, APFS and ext4, and exactly which one to pick for a USB stick, external drive, Mac or Linux PC.

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How to Spot a Phishing Email in 10 Seconds (With Real-World Warning Signs)

The fast checks that expose phishing emails and texts, the tricks scammers use in 2026 including AI-written messages and QR codes, and what to do if you already clicked.

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Phone Storage Full? How to Free Up Space on iPhone and Android Without Losing Anything

Step-by-step ways to free up storage on iPhone and Android: find the biggest apps, offload unused apps, clean up photos, WhatsApp media and "System Data", and back up safely first.

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