A new type of attack known as KRACK(Key Reinstallation AttaCKs) was discovered by Mathy Vanhoef of imec-DistriNet which, essentially is a vulnerability in the WPA2 protocol, which till date was considered as a secure protocol for Wi-Fi connection. Thus, it affects all products that support WiFi.
BtCIRT recommends users and administrators to keep your devices updated with the patch the vendors provide as soon as they are released and make sure to use HTTPS while transmitting sensitive information.
More details about the attack are available at: ABC News on KRACK and WiFi KRACK – Key Reinstallation AttaCKs.
More Technical details are available in the paper published by the researcher Mathy and Frank- https://papers.mathyvanhoef.com/ccs2017.pdf