# Undetectable Spyware or Pi-Hole bug?

**URL:** <https://discourse.pi-hole.net/t/undetectable-spyware-or-pi-hole-bug/6816>\
**Category:** Help\
**Created:** [January 28, 2018, 3:43pm UTC](https://discourse.pi-hole.net/t/undetectable-spyware-or-pi-hole-bug/6816 "2018-01-28T15:43:12Z")\
**Posts on this page:** 1\
**Showing post:** 22

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**Author:** ![Mcat12](https://discourse-cdn.pi-hole.net/user_avatar/discourse.pi-hole.net/mcat12/32/20_2.png) [@Mcat12](https://discourse.pi-hole.net/u/Mcat12)\
**Post date:** [February 2, 2018, 6:49pm UTC](https://discourse.pi-hole.net/t/undetectable-spyware-or-pi-hole-bug/6816/22 "2018-02-02T18:49:13Z")

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You can run `pihole -t` or `tail -F /var/log/pihole.log` to follow the log as it's written to. More info here:

> [@How do I watch and interpret the pihole.log file?](https://discourse.pi-hole.net/t/how-do-i-watch-and-interpret-the-pihole-log-file/276):
>
> Use this [command](https://discourse.pi-hole.net/t/the-pihole-command-with-examples/738) to watch the log file in real time: pihole -t which is just a short version of sudo tail -F /var/log/pihole.log You can also do it on the web interface: [image] When your Pi-hole first starts up, it will read your hosts file as well as /etc/pihole/gravity.list, which is where your list of ad-serving domains is. So one of the first log entries will read like this: Nov 13 07:45:04 dnsmasq[1055]: read /etc/hosts - 5 addresses Nov 13 07:45:06 dnsmasq[1055]: read /etc/pihole/g…

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