After one of my s4+ came back online it's showing a high percentage of invalid. What's up with that
At a guess It looks like your S4+ was hacked into.
Yes there's a gap of no shares being sent to the pool for about 5hrs.
I presume at the end of that period someone checked the setting in the miner and changed them back to the pool.
There is a major security issue with ALL bitmain miners.
They have default usernames/passwords for all access and also the cgminer API is set wide open to anyone with network access to change anything.
If your miner is behind a standard home network router, that usually solves the security problem.
However, many home network routers have ways for people to hack into them and get through to your home network.
Wifi is also far for being very secure.
I've already had another user report such a problem so I would put it on advisement to all miners on the pool (or any other pool) who have Bitmain miners, to ensure the passwords on them are not default and also to modify the API allow access to NOT be W:0/0
The previous user found his miners pointing to an address at Eligius.
Eligius has a policy of no help (and no blocking any miners) unless you have a court order so you really need to be vigilant about this.
I have no access to my miners as it has been held in china and pay for maintenance. I have same issue for more tha 4 hrs ...my id is , please can you check.