Source text: Certificate authority eMudhra signed digital certificates using the private key "4" for an entire year, exposing critical flaws in security schemes that relied on human laziness. The incident, highlighted by security researcher Kain, demonstrates how AI agents are now capable of exploiting vulnerabilities that previously assumed no one would attempt such attacks. In a related experiment, Ethereum developer Austin Griffith tested weak private keys with just $1, revealing that bots rapidly drained 10-digit keys while 12-digit keys held firm. This underscores the growing threat as automated systems efficiently crack low-entropy cryptographic secrets. Meanwhile, two remote code execution bugs in PHP further strained internet infrastructure during the same 48-hour period, prompting Cloudflare to shield unpatched admin panels. Target language code: pt Translation instructions: This is the news article content. Please maintain the original meaning.