Everyone should upgrade to DigiByte core v6.16.5 following the discovery of a network-wide bug found in Bitcoin, DigiByte and many UTXO blockchains:

https://twitter.com/DigiByteCoin/status/1042918575214874624

https://www.zdnet.com/article/bug-in-bitcoin-code-also-opens-smaller-cryptocurrencies-to-attacks/

https://nvd.nist.gov/vuln/detail/CVE-2018-17144