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Background for this topic.
Encryption transforms readable data into ciphertext using an algorithm and a key, so someone who obtains the ciphertext cannot normally understand it without the required key. It protects confidentiality for data in transit, such as traffic between services, and at rest, such as files, databases, and backups. Encryption does not by itself prove who sent data, prevent tampering, or protect plaintext displayed on a compromised endpoint.
Its security therefore depends on implementation and key management. Attackers may target stolen, exposed, or overprivileged keys, weak algorithms or protocols, poor randomness, and systems that decrypt data unnecessarily. Use modern, authenticated encryption where appropriate; protect keys separately from encrypted data with tightly limited access, rotation and revocation procedures, and monitored use. Verify that encryption covers relevant backups and internal service links, while recognizing that lost keys can make recovery impossible and that encrypted traffic may still reveal metadata such as timing or endpoints.
Ransomware and infostealers are winning on stealth, not encryption. Picus Blue Report 2025 reveals just 3% of data exfiltration attempts are stopped. Find and fix your biggest exposure gaps before they're exploited. [...]
Home Office officials reportedly concede Brit government on back foot as Trump moves to protect US Big Tech players Analysis The Home Office's war on encryption – its most technically complex and controversial aspect of modern policymaking yet – is starting to look like battlefield failure after more than ten years of skirmishes.…
Cybersecurity researchers have discovered a fresh set of security issues in the Terrestrial Trunked Radio (TETRA) communications protocol, including in its proprietary end-to-end encryption (E2EE) mechanism that exposes the system to replay and brute-force attacks, and even decrypt encrypted traffic
The OPC UA communication protocol is widely used in industrial settings, but despite its complex cryptography, the open source protocol appears to be vulnerable in a number of different ways.
Cybersecurity firm Profero cracked the encryption of the DarkBit ransomware gang's encryptors, allowing them to recover a victim's files for free without paying a ransom. [...]