AIS getting overloaded!

Automatic Identification Systems (AIS) are causing problems for mariners transiting waters where there are high concentrations of fishing vessels, particularly in the East China Sea. It seems the real problem is fishing nets where AIS has been installed to fool ships into steering clear of them (hundreds and hundreds of them).  Just be aware if you are a sailboat as it sounds like a place to avoid when possible.
Anyone who googles AIS Security will find out a lot about other spoofs/fake/distress fake broadcasts; re,  https://blog.trendmicro.com/trendlabs-security-intelligence/vulnerabilities-discovered-in-global-vessel-tracking-systems/