When you scan certificates manually, you are likely to be storing the details of your keys and certificates along with their expiry dates in spreadsheets, and track them from time to time. You could even configure an alert to be triggered when a certificate is about to expire. However, storing your private keys in a spreadsheet is a hazard in itself, as spreadsheets are quite easy to break into.
Hackers who get access to your private keys could break into your servers, control and manipulate all the private transactions that happen in your organization’s network, and steal your data.
Also, a typical enterprise has hundreds of thousands of certificates installed in its network on average, and tracking all of them on mere spreadsheets is both illogical and impossible. For relatively small networks too, manually tracking certificates is fraught with the possibility of human errors. Even a single certificate that’s overlooked can cause the whole network to experience an outage if it expires. This why having a dedicated software solution to scan your network certificates is strongly recommended. Such software automate the scanning process and ensure no certificate goes undetected. They also display the results of the scan, i.e., the status of the certificates on clear, comprehensive dashboards for quick viewing, and also send regular alerts to the persons responsible for network security in case a certificate is weak or on the verge of expiry.