Bulgaria sits in a regulatory niche that suits security researchers. EU jurisdiction at non-EU prices. For pentest operators specifically, this means attacker-side infrastructure with legal isolation without the regulatory friction of mainstream cloud providers. The EU East placement gives you predictable latency for European, North American, and selected APAC audiences depending on the workload profile.
Legal context: EU + low-cost operations. Combined with no-KYC signup and cryptocurrency billing, your operational identity stays separate from your hosting footprint. This matters more for security researchers than the average web project.