It tends to be the worst fear of any cybersecurity profession to be informed by a third party entity or even by law that he or she has suffered a data breach. It is unfortunate that even with the growth of technology in the modern world, cybercriminals are still finding their way into networks something that calls for even faster upgrade of network security to avoid exfiltration. One would not only have data in the wrong hands but would also lead to possible customer loss, public embarrassment among others. The company may also end up losing trading partners. There maybe measures put to ensure that there is no exfiltration but it is always essential to keep checking just to be sure that there is no data breach.
File changes are not of the signs that all is not well with the company network. One would need to note that cybercriminals have high chances of deleting files, replacing files, modifying them or even changing them to avoid any detection. Changing of files tends to take a very little time and hence the need to figure out the best way to secure the network. It would be critical to figure out real time monitoring of the network especially for a company that deals with high end data. It would also be modest to focus on distinguishing between data breaches on the network as well as normal operations of the network. It would be critical to work with an expert who is updated with the most recent exfiltration technology by cybercriminals.
It would also be essential for one to be wary of unusually slow internet or even devices. The moment the internet is so slow may be an indication that all is not well. You would need to make sure that both the network and the devices as well checked by an expert to avoid instances where you allow more access to data by the criminals. The most probable causes of slow internet tends to include a virus on the network, a virus or even outbound traffic.
There are also instances where there tends to be tampering of the devices. It is a great red flag where a device is found on after it was initially switched off. In a case where there are antivirus warnings, popup messages, and funny browser toolbars, there are high chances that there is a virus that may be intercepting data. One would avoid interacting with the device more until an expert figures out whether it is a data breach or not.