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The insider who never existed
Every 'system', 'guaranteed method' and 'leaked algorithm' sold online, forever.
The final category is the one you are most likely to actually encounter: people selling lottery prediction systems, wheeling software, hot-and-cold number services and leaked-algorithm claims.
None of them work, and the reason is not that the sellers are bad at it. A properly run draw has no state that carries between draws, there is nothing to predict, in the same sense that there is nothing to predict about a fair coin.
The tell is easy: if somebody could reliably predict a lottery, the rational move would be to play it rather than to sell a $39 PDF about it. That argument has never once failed.
What every one of them attacked
Nobody in this article predicted a random number. The successful ones went after the printing plant, the source code, the shop counter, and the rules of a game that had not been checked with a calculator. The unsuccessful ones sold PDFs.
Which is the genuinely useful takeaway, and it applies to any prize game anyone offers you. The draw is rarely the weak point. The weak points are: who wrote the software, who can see the outcome before you can, whether the rules were checked by someone who could do the arithmetic, and whether anyone outside the organisation can verify a single word of it.
That last one is the only real defence, and it is why any game worth playing should be able to show you, after the fact, that the result was fixed before you played, not merely tell you so.