With the halving getting closer by the day, Bitcoin miners continue to increase the network's processing power and, with it, its security. For a couple of days now, the average total hashrate has been above 500 EH/s, a record for Bitcoin mining.

In the last week, more precisely on November 16 and 18, there were two major increases in hashrate that pushed the average above 500 EH/s on Sunday the 19th. The next day, real-time (not average) measurement by Braiins indicated a hashrate of 515 EH/s.
The hashrate is directly linked to Bitcoin's security because, the greater the number of mining nodes, the more resilient and difficult to control the network becomes.
The record increase in miners' hashrate has also led to the difficulty of mining increasing to unprecedented levels. Since November 12, when the last automatic adjustment was given, the difficulty is 64.68 trillion (trillions or T). The difficulty indicates how complex it is to find the hash of each block being mined, and it is periodically adjusted to maintain the estimated time of 10 minutes for the creation of new Bitcoin blocks.