https://lifehacker.com/don-t-fall-for-this-crypto-front-running-scam-on-yout-1849849521
Simply put, front running involves the following:
- the front runner waits for the victim to make a crypto transaction, then
- he hijack it by paying more "gas fee" than the victim.
The newly purchased cryptocurrency is then immediately resold by the front runner at a higher price, just as the slower victim transaction occurs, and the front runner makes a profit.
Finally, the victim gets less crypto than expected because prices rise at the last moment.
Beware of this clever scam!!