Offensive Security (OffSec)
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The gold standard hands-on penetration testing certification. Candidates must compromise multiple machines in a 24-hour proctored exam on a live network — entirely performance-based, no multiple choice. OSCP+ badge valid 3 years.
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Process improvement certification covering DMAIC methodology, statistical analysis, root-cause analysis, and lean principles. Vendor-neutral credential widely accepted across manufacturing, healthcare, and IT operations. CSSC offers a free online exam.