Your Job Posting Just Handed Me the Keys

When I am starting a red team exercise I start with deep recon, including your job postings, your website, your social media, and your LinkedIn employee pool, and what I find before I ever touch your perimeter tells me almost everything I need to know. No tools. No exploits. Just a browser and time.

The job description is the first gift. “Seeking a senior network engineer with experience in Palo Alto, CrowdStrike, and Azure AD” just told me your firewall vendor, your EDR platform, and your identity infrastructure. “Familiarity with legacy systems a plus” told me you are carrying technical debt you cannot shed. “Must be comfortable working with a small IT team” told me your coverage is thin and your response time is slower than you think. I have not touched your network and I already have a blueprint.

Then I go to your About Us page. I pull every name, every title, every headshot. Now I know your CEO, your CFO, your COO, your head of IT, and your compliance officer. I know who controls the wire transfers and who is likely to act fast without verifying.

Then I hit social media, LinkedIn, Facebook, Instagram, X. I am not just looking at you. I am looking at your family. Your spouse’s profile confirms your last name. Your daughter’s graduation post gives me her name and her school. Your vacation photos tell me when you are out of the office. And your dog, the one in every third post with forty likes, just became my pretext phishing email. 

Back on LinkedIn I crack your email convention in ten minutes. Three or four profiles and I have your format, first initial last name, first name dot last name, dot com, dot org, dot net. Now I have a working email structure for every name on your About Us page.

Then I go phishing. I send you an email that appears to come from your wife. Subject line: “Max is at the vet.” Max being the retriever I found in sixty seconds on Instagram. Attached is the invoice. You click it because it is completely believable and it came from someone you trust. The moment you do I have deployed a keylogger, I am in, I am traversing your network, I am finding your backup infrastructure, and I am shutting it off before you know I was ever there, deploy ransomware. 

This is not theoretical. This is the workflow. The defense is not complicated, audit your public footprint, scrub your job postings, train your people on what they are broadcasting, and understand that everything your family posts is also your attack surface. This attack vector should be on every Internal Audits radar. 

Your perimeter is not where the breach starts. It starts with a job posting, a dog’s name, and a Tuesday afternoon. This is how real hackers take down your network, clean and efficient.