Part 2 of the series delves into Softguard Systems, creators of the Superlok copy protection, popular among PC developers in the ’80s. The protection scheme allowed for a single backup copy and game installation to a hard drive. However, reviews indicated occasional technical issues. Sierra, known for popular games like King’s Quest, employed Superlok, but its implementation left the encryption key vulnerable, making it easy for crackers to bypass protections. Sierra was more lenient with manual-based checks, which they eventually switched to once Superlok’s flaws were exposed. A detailed analysis of Superlok’s techniques reveals its vulnerabilities against determined crackers.
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