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Project website notrace.how
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Project maintainers User avatar ntp
Translation license proprietary resources earsandeyes threats.contribute earsandeyes.contribute threats threats.about earsandeyes.about core threats.tutorial glossary

String statistics

Strings percent Hosted strings Words percent Hosted words Characters percent Hosted characters
Total 1,427 47,331 325,300
Translated 16% 242 4% 2,218 4% 14,302
Needs editing 12% 172 12% 5,844 11% 37,419
Read-only 0% 0 0% 0 0% 0
Failing checks 1% 1 1% 1 1% 4
Strings with suggestions 1% 12 1% 25 1% 176
Untranslated strings 70% 1,013 82% 39,269 84% 273,579
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Source string changed

NTP / threats — Portuguese (Brazil)

Mass video surveillance (also known as *close-circuit television*, or *CCTV*) is the large-scale collection, storage and analysis of video and audio data from video surveillance cameras. Mass video surveillance aims to capture the identity of people who pass through a space and to extend its coverage to as much space as possible. Some countries now have more surveillance cameras than citizens.

# Collection

Sources of CCTV footage include:

- Cameras in the street or in other public locations.
- Cameras in private buildings (e.g. shops, offices).
- Public transport cameras on buses, trains, highways, etc.
- Home surveillance systems such as Amazon Ring.
- In-vehicle surveillance systems like those found on Teslas.

CCTV cameras can vary widely in quality, range, night vision capabilities, presence of microphones, etc.

# Storage

After its collection, CCTV footage is often stored for some time (from days to indefinite durations) before being erased.

# Analysis

An adversary can analyze CCTV footage:

- In real time if the cameras are integrated into a central network. Real-time analysis can take place either as part of routine surveillance or during exceptional events (e.g. demonstrations).
- Retroactively if the CCTV footage has been stored. Retroactive analysis can help identify a suspect by their [face](tl://techniques/forensics/facial-recognition.html), [gait](tl://techniques/forensics/gait-recognition.html), [voice](tl://techniques/forensics/linguistics.html), etc.

Analysis of CCTV footage can be performed:

- By humans.
- By automated systems such as automated license plate readers or [facial recognition systems](tl://techniques/forensics/facial-recognition.html).

# See also

- [You Can't Catch What You Can't See: Against Video Surveillance](res://#catch-see).
- The topics ["[Video surveillance](res://#topic=video-surveillance)" and ["[Automated license plate readers"](res://#topic=automated-license-plate-readers)".
2 weeks ago
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New strings to translate

NTP / core — Portuguese (Brazil)

2 new strings to translate appeared to the translation. 2 weeks ago
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Resource update

NTP / core — Portuguese (Brazil)

The "core/pt-BR.json" file was changed. 2 weeks ago
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String updated in the repository

NTP / core — Portuguese (Brazil)

Newsletter archives are publicly accessible [here](https://lists.riseup.net/www/arc/notraceproject).
 
2 weeks ago
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String updated in the repository

NTP / core — Portuguese (Brazil)

Tagalog
Tagalog
2 weeks ago
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String updated in the repository

NTP / core — Portuguese (Brazil)

Italian
Italiano
2 weeks ago
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String updated in the repository

NTP / core — Portuguese (Brazil)

Tagalog translation
 
2 weeks ago
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Bulk status change

NTP / threats.tutorial — Portuguese (Brazil)

### Impact
### Impact
2 weeks ago
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Bulk status change

NTP / threats.tutorial — Portuguese (Brazil)

See the [contribute [@web|page@][@pdf|section@]](tl://contribute.html) for more information.
See the [contribute [@web|page@][@pdf|section@]](tl://contribute.html) for more information.
2 weeks ago
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Bulk status change

NTP / threats.tutorial — Portuguese (Brazil)

- "Obtain evidence from a house raid of known suspects" matches [House raid](tl://techniques/house-raid.html).
- "Collect evidence from seized electronic devices" matches [Targeted digital surveillance: Physical access](tl://techniques/targeted-digital-surveillance/physical-access.html) because they would access your electronic devices, and [Targeted digital surveillance: Authentication bypass](tl://techniques/targeted-digital-surveillance/authentication-bypass.html), if they try to guess your passwords or break your encryption.
- The other nodes don't match anything, they're just part of the house raid.
- "Obtain evidence from a house raid of known suspects" matches [House raid](tl://techniques/house-raid.html).
- "Collect evidence from seized electronic devices" matches [Targeted digital surveillance: Physical access](tl://techniques/targeted-digital-surveillance/physical-access.html) because they would access your electronic devices, and [Targeted digital surveillance: Authentication bypass](tl://techniques/targeted-digital-surveillance/authentication-bypass.html), if they try to guess your passwords or break your encryption.
- The other nodes don't match anything, they're just part of the house raid.
2 weeks ago
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