Daryl finds a physical device attached to a gas pump's credit card reader. Which of the following types of attack has he likely noticed?

Daryl has discovered a skimmer, a device used for skimming attacks that capture credit and debit card information. Skimmers may be able to wirelessly upload the information they capture, or they may require attackers to retrieve data in person. Some skimmers include cameras to capture keypresses for PINs and other data. A replay attack would reuse credentials or other information to act as a legitimate user, a race condition occurs when the time of use and time of check of data can be exploited, and a card cloner would be used after cards were skimmed to duplicate them.