With the widespread spread of cryptocurrencies around us, we may find many who have invested directly or indirectly in cryptocurrencies, and some of us use our computer that contains some crypto wallets or even use it with hardware wallets, following advice such as using an open source operating system, not downloading random applications, buying Hardware wallets, using a strong password to encrypt the wallet file is necessary, but some of us are random when it comes to USB flash drives or random plug cables, where a friend asks you to charge his phone or send you pictures or movies, or even in university life by sending PDF files.
You think that as long as you do not open a USB flash drive file or run an antivirus or do not install these files, you are safe, but some of them are able to logs your keystrokes or even copy some files from your computer without your permission.
Many of these tools are not sold as hacking tools, but their design allows hackers to misuse them. Here are some tools that may do this:
1. O.MG cables

They look like normal charging cables, but they contain a small computer that can record all your keyboard clicks and can know your Wi-Fi password, or even your wallet password.
2. USBKill devices

USBKill devices are little dongles that look like USB flash drives, but instead of storing data, they send circuit-busting electrical charges into the devices they are plugged into.
3. USB Rubber Ducky

While the tool looks like a regular flash drive, the Rubber Ducky can be programmed to "type" commands into any device it's plugged into.
4. LAN Turtle

They may look like an Internet adapter, but they can collect a lot of data about you.
Not only these tools but there are many more, you can find them here
https://www.zdnet.com/article/7-hacking-tools-that-look-harmless-but-can-do-real-damage/Source:
https://www.zdnet.com/article/7-hacking-tools-that-look-harmless-but-can-do-real-damage/