Explanation/Reference:
Reference: https://www.checkpoint.com/products/identity-awareness-software-blade/

Keep Hit Count data up to - Select one of the time range options. The default is 6 months.
Data is kept in the Security Management Server database for this period and is shown in the Hits column.

Suspicious Activity Rules Solution
Suspicious Activity Rules is a utility integrated into SmartView Monitor that is used to modify access privileges upon detection of any suspicious network activity (for example, several attempts to gain unauthorized access).
The detection of suspicious activity is based on the creation of Suspicious Activity rules. Suspicious Activity rules are Firewall rules that enable the system administrator to instantly block suspicious connections that are not restricted by the currently enforced security policy. These rules, once set (usually with an expiration date), can be applied immediately without the need to perform an Install Policy operation