Salami fraud is best defined as what?

Salami fraud is best defined as an attack involving small thefts from multiple victims. This type of fraud is characterized by making minor deductions or thefts that may seem insignificant on their own but accumulate to a substantial loss when taken collectively. The clever aspect of salami fraud is that the individual transactions are often too small to attract attention, allowing the perpetrator to operate unnoticed for an extended period.

In this context, the other options do not accurately describe salami fraud. Querying a database, hiding file extensions, and circumventing software registration pertain to different aspects of computer security and digital manipulation, but none encapsulate the essence of salami fraud, which primarily focuses on the method of stealing small amounts from various individuals or accounts to aggregate larger sums illegally.