# Malware Malware was responsible for over $3B of losses in 2021. **Malware Cost Users $3.2B in 2021**

Source: Chainalysis 2022 Crypto Crime Report

The most popular methods used by hackers include: * **Cryptojacking:** The unauthorized use of someone else's computer to mine cryptocurrency. Technically, cryptojackers are stealing computing power (and therefore electricity), but this can be given a numerical value. * **Trojans:** Viruses that look like legitimate programs but instead infiltrate a user’s computer to steal important data such as a person’s private keys * **Clippers:** Clipping is the process of inserting new text into a user’s clipboard. Hackers use this to insert the address of their crypto wallets, so when a user goes to transfer funds it is redirected to the hacker (note: always triple check the address you’re sending to!) * **Info Stealers:** Collect saved files, autocomplete history and seed phrases from compromised computers. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://www.digitalnations.xyz/web3-overview/challenges/hacks-and-scams/malware.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.