Scientists finally discover how a common gut bacterium can trigger colon cancer

Researchers found that the gut bacterium Bacteroides fragilis toxin BFT attaches to claudin-4 on colon cells before damaging E-cadherin, according to a Nature study from Johns Hopkins. A molecular decoy carrying claudin-4 sequences protected mice from toxin-induced damage, though human testing and cancer prevention remain unproven.

AWS Capacity Largely Sold Out Through 2027, With On Demand Headroom Reserved

Amazon CEO Andy Jassy said most of AWS’s large committed cloud capacity is sold out through 2027, with some 2028 capacity allocated and headroom kept for On Demand, EC2 and Bedrock. Analysts and developers questioned whether this means ordinary EC2 instances are hard to obtain, while some reported constraints on on-demand and Kubernetes clusters.

Leaking Secrets from Air-Gap Computers by Spelling Radio Signals from RAM (2024)

Researchers describe malware that encodes data into radio emissions generated by a computer's memory buses, letting an attacker with software-defined radio hardware and an ordinary antenna intercept information from an air-gapped machine. The paper reports a 1,000-bit-per-second leakage method and proposes countermeasures.

GPT-6.1 Terra vs. Claude Opus 5.5: Cheaper and faster in three tests at max effort

In three max-effort tests, GPT-6.1 Terra tied Claude Opus 5.5 on release triage, led on cell-lineage tracking, and finished a CI audit Opus did not complete. Terra's uncached token cost was estimated at $25.99, compared with $214.96 for Opus, though the single-run synthetic results do not establish repeatability or a general ranking.

How We Could Have Backdoored Bash (Hacktron blog)

Hacktron reported that a crafted email address gave any registered GNU Savannah user code execution, enabling the group to gain superuser status and impersonate Bash's maintainer. It said an unpatched kernel yielded root access, and that it could have added a push-capable SSH key to the upstream Bash repository; the FSF was notified on May 11, 2026.

Scientists discover a hidden driver of high cholesterol and a way to stop it

UC San Diego researchers found a biological pathway involving Ral and CTSA that depletes liver LDL receptors, helping explain how high-cholesterol diets impair cholesterol clearance. A previously safety-tested CTSA inhibitor could advance to Phase 2 trials, though it has not yet been shown to lower cholesterol in people.