ThreatsDay Bulletin: AI Prompt RCE, Claude 0-Click, RenEngine Loader, Auto 0-Days & 25+ Stories

Threat activity this week shows one consistent signal — attackers are leaning harder on what already works. Instead of flashy new exploits, many operations are built around quiet misuse of trusted tools, familiar workflows, and overlooked exposures that sit in plain sight. Another shift is how access is gained versus how it’s used. Initial entry points are getting simpler, while post-compromise

Threat activity this week shows one consistent signal — attackers are leaning harder on what already works. Instead of flashy new exploits, many operations are built around quiet misuse of trusted tools, familiar workflows, and overlooked exposures that sit in plain sight.

Another shift is how access is gained versus how it’s used. Initial entry points are getting simpler, while post-compromise activity is becoming more deliberate, structured, and persistent. The objective is less about disruption and more about staying embedded long enough to extract value.

There’s also growing overlap between cybercrime, espionage tradecraft, and opportunistic intrusion. Techniques are bleeding across groups, making attribution harder and defense baselines less reliable.

Below is this week’s ThreatsDay Bulletin — a tight scan of the signals that matter, distilled into quick reads. Each item adds context to where threat pressure is building next.

Taken together, these developments show how threat actors are balancing speed with patience — moving fast where defenses are weak, and slowing down where stealth matters more than impact. The result is activity that blends into normal operations until damage is already underway.

For defenders, the challenge isn’t just blocking entry anymore. It’s recognizing misuse of legitimate access, spotting abnormal behavior inside trusted systems, and closing gaps that don’t look dangerous on the surface.

The briefs that follow aren’t isolated incidents. They’re fragments of a wider operating picture — one that keeps evolving week after week.

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 The Hacker News 

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