Fingerprinting a private network in a backlink profile

Fingerprinting a private network in a backlink profile
Word on the street: a brand 'earned' 200 links last quarter. The profile says otherwise. Here's the PBN-detection checklist that holds up:
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Pull referring domains, export, and look for shared hosting IP C-blocks — three or more sites on one block is a red flag, not a coincidence
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Check for identical CMS footprints: same theme, same plugin set, same WHOIS privacy registrar across 'unrelated' sites
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Scan outbound link counts. Real sites link out broadly; network sites link to 4-6 money targets and nothing else
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Look at the content cadence — networks post in bursts then go silent for months. Editorial sites don't
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Reverse-image the author avatars. Stock-photo headshots reused across domains = same operator
Three of those five hit at once and you're not looking at organic links — you're looking at someone's footprint they think nobody's reading. We are. Watch this space.