# Del Harvey: The strangeness of scale at Twitter

When hundreds of thousands of Tweets are fired every second, a one-in-a-million chance -- including unlikely sounding sounding scenarios that could harm users -- happens about 500 times a day. For Del Harvey, who heads Twitter’s Trust and Safety Team, these odds aren’t good. The security maven spends her days thinking about how to prevent worst-case scenarios while giving voice to people around the globe. With deadpan humor, she offers a window into how she keeps 240 million users safe.

- Kind: Talk
- Year: 2014
- Runtime: 9 min
- By: TED.com
- Genres: Education
- Archive: [Internet Archive](https://archive.org/details/DelHarvey_2014)
- Licence or status: [CC BY-NC-ND 3.0](http://creativecommons.org/licenses/by-nc-nd/3.0/) (as the archive states it)
- Who can watch: Tweens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/DelHarvey_2014?play=1)