When employees update their profiles with recent projects and newly acquired skills, it can provide penetration testers with a deep understanding of the specific technologies being used by the company. Hence, reviewing updates to employees' professional profiles for mentions of recent projects and technology experience is the most direct method to learn about a company's new implementations and updates. Tracking administrator contacts and cryptographic flaws might offer other insights but do not specifically relate to learning about new technology deployments. Monitoring customer reviews may hint at changes but is too indirect for gathering detailed tech stack information.