Sally is involved in illegal activities. She tries to steal bank details of other individuals by stealing the bank statements thrown in garbage. Which type of technique is Sally using to steal information?

This technique can best be referred to as dumpster dive.

The hungry and the homeless are not the only people who dive into dumpsters; criminals as well do to. Forms, for example, information from those cashed checks or transfers, bank account transaction history, wire transfer information or personal financial statement is available in dumpsters behind the bank or a utility company. A dumpster can be described as a big bank in a big city where people like Sally can garner sensitive information in minutes.

Dumpster diving

This problem requires you to simply be aware of the terminology and definitions.

Dumpster diving from an IT perspective is using various methods to glean information about a person. It can involve looking through trash and garbage to get something useful that can be used to gain access. There are several countermeasures available such as shredding any papers prior to discarding them, locking refuse contains, etc.