perfcl.exe is registered as a downloader. This process usually comes bundled with a virus or spyware and its main role is to do nothing other than download other viruses/spyware to your computer. This process is a security risk and should be removed from your system.

perfctrs.dll provides functions for logging and hardware counters.

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perfmon.exe is a process associated with Microsoft庐 Windows庐 Operating System from Microsoft Corporation.

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perfproc.dll provides functions for logging and hardware counters.

perl.exe is a process which will sit quietly in the background and block SPAM from your mailbox. This is a non-essential process. Disabling or enabling it is down to user preference.

persfw.exe is a part of Tiny's range of Internet security products. It offers a firewall application which blocks, in real-time Virus attacks distributed over the Internet. This program is important for the stable and secure running of your computer and should not be terminated.

perstray.exe is a process which belongs to the Plantronics Persono Audio control center. This program is a non-essential process, but should not be terminated unless suspected to be causing problems.

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pf78.exe is a process belonging to the CasinoClient advertising program. This process monitors your browsing habits and distributes the data back to the author's servers for analysis. This also prompts advertising popups. This process is a security risk and should be removed from your system.

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pfusssct.exe is a process associated with PfuSSSct.exe from PFU LIMITED.

pg2.exe is a process which acts as a utility for peer-to-peer networking tools adding extra security features. This is a non-essential process. Disabling or enabling it is down to user preference.

pg_ctl.exe is a process belonging to the PostgreSQL relational database management system. This program is a non-essential process, but should not be terminated unless suspected to be causing problems.

pgaccount.exe is a process associated with ProcessGuard User Alerting Application from DiamondCS.

pgmonitr.exe is a process belonging to an advertising program by DelFin. This process monitors your browsing habits and distributes the data back to the author's servers for analysis. This also prompts advertising popups. This process is a security risk and should be removed from your system.