Cybersecurity researchers have uncovered a critical pattern: spikes in network reconnaissance, scanning, and brute-force attacks consistently precede the disclosure of new vulnerabilities by up to six weeks. GreyNoise's analysis of 216 events shows this correlation is strongest for edge devices from vendors like Palo Alto and Fortinet, offering defenders a rare early warning window. This insight transforms how organizations can anticipate threats and shift from reactive patching to proactive defense.