1 of 41

Five years of the

Right to be Forgotten

Kurt Thomas, with Theo Bertram, Elie Bursztein, Stephanie Caro,�Hubert Chao, Rutledge Chin Feman, Peter Fleischer, Albin Gustafsson,�Jess Hemerly, Chris Hibbert, Luca Invernizzi, Lanah Kammourieh Donnelly, Jason Ketover, Jay Laefer, Paul Nicholas, Yuan Niu, Harjinder Obhi,�David Price, Andrew Strait, and Al Verney

Security and Privacy Group

2 of 41

Right to be Forgotten (RTBF)

Delist inaccurate, inadequate, irrelevant,

or excessive information surfaced by search queries containing the name of the requester.

Security and Privacy Group

3 of 41

Balancing between individual privacy, public interest

Security and Privacy Group

4 of 41

Balancing between individual privacy, public interest

Decision made by search provider via manual review

Security and Privacy Group

5 of 41

Example of balancing test

Request

A former politician requested to delist 3 URLs from Google Search reporting on his recent departure from politics in connection with a drug scandal.

Outcome

Google delisted the 3 URLs as they disclosed the politician’s private home addresses, not just information about the scandal.

Security and Privacy Group

6 of 41

Example of balancing test

Request

A former politician requested to delist 3 URLs from Google Search reporting on his recent departure from politics in connection with a drug scandal.

Outcome

Google delisted the 3 URLs as they disclosed the politician’s private home addresses, not just information about the scandal.

Security and Privacy Group

7 of 41

Over the last five years then...

3M

Requested URLs

502,000

Requesters

45%

URLs delisted

Security and Privacy Group

8 of 41

Our measurement study

Types of sites requested

Information

present on site

Entities creating requests

Security and Privacy Group

9 of 41

Provider greater transparency around how the RTBF is applied in practice

Security and Privacy Group

10 of 41

Review process & dataset

Security and Privacy Group

11 of 41

Data present in a request

Email address

URLs to delist

Country

Timestamp

Security and Privacy Group

12 of 41

Manual annotations added during review

Requesting entity

Minor, government official, corporate entity...

Social, directory, news, government records

Type of site

Personal information, professional information, crime, political, self-authored ...

Information on page

Security and Privacy Group

13 of 41

Five years of data, since implementation

47,000

Average URLs per month

Security and Privacy Group

14 of 41

Average time to arrive at a decision

2014

2019

85 days

6 days

Security and Privacy Group

15 of 41

Average time to arrive at a decision

2014

2019

85 days

6 days

Security and Privacy Group

16 of 41

Which sites are requested for delisting?

Security and Privacy Group

17 of 41

Two dominant intents for delistings

Legal history

19%

News

2%

Government

16%

Directory

13%

Social media

Personal information

Security and Privacy Group

18 of 41

Influenced by regional privacy attitudes and local norms

France

Italy

Spain

42%

Directory, Social media

(vs. 29% across Europe)

33%

News

(vs. 19% across Europe)

10%

Government

(vs. 2% across Europe)

Security and Privacy Group

19 of 41

Delisting rates reflect public interest balancing

53%

Directory,�Social media

35%

News

19%

Government

Security and Privacy Group

20 of 41

Increasing share of requests to news

dailymail.co.uk�ouest-france.fr�telegraph.co.uk

repubblica.it

Examples include:

Security and Privacy Group

21 of 41

Declining share of requests to social media

facebook.com�twitter.com�youtube.com�plus.google.com�instagram.com

Examples include:

Security and Privacy Group

22 of 41

Influence of GDPR on directory requests

After GDPR, only 55% of the top 500 requested directory sites remain online.

Examples include:

118712.fr�societe.com�192.com

Security and Privacy Group

23 of 41

What information is requested for delisting?

Security and Privacy Group

24 of 41

Professional & personal information most common

24%

8%

Professional information

Personal information

Sensitive personal information

34% of all requested URLs

Professional activities, contact info, addresses, medical status, and more.

Predominantly on directory sites.

2%

Professional activities, contact information, phone numbers, and mailing addresses.

Security and Privacy Group

25 of 41

Criminal records and negative reviews also common

17% of all requested URLs

24%

8%

Crime

Professional wrongdoing

9%

Convictions, acquitals,� or negative reviews.

Security and Privacy Group

26 of 41

Remaining types of common information

24%

20%

9%

4%

Name not found

Self-authored

33% of requested URLs

Political

24%

Security and Privacy Group

27 of 41

Affinity of types of information to different sites

News

Professional information

18%

Personal information

3%

Crime

22%

Professional wrongdoing

22%

Self authored

5%

Name not found

10%

...

Security and Privacy Group

28 of 41

Affinity of types of information to different sites

News

Social Media

Professional information

18%

8%

Personal information

3%

5%

Crime

22%

3%

Professional wrongdoing

22%

2%

Self authored

5%

33%

Name not found

10%

29%

...

Security and Privacy Group

29 of 41

Delisting rates reflect public interest

97%

Personal information

48%

Crime

3%

Political

Criticism of platform �or activities

Personal addresses, contact info, photos

Security and Privacy Group

30 of 41

Who makes delisting requests?

Security and Privacy Group

31 of 41

Majority of requested URLs come from private individuals

84%

Private individual

6%

Minor

2%

Corporate entity

4%

Politician

4%

Public figure

Security and Privacy Group

32 of 41

Small number of requesters make heavy use of RTBF

Requested URLs from just 10K requesters

34%

Security and Privacy Group

33 of 41

Long tail of hundreds of thousands of requesters

Requested URLs from just 10K requesters

34%

Requested URLs from 400K requesters

29%

Security and Privacy Group

34 of 41

Requester activity varies by country

URLs requested per

1000 Internet users

12

7

3

France

Italy

Greece

Security and Privacy Group

35 of 41

Decreasing number of new requesters

6,800

Average new requesters per month

Security and Privacy Group

36 of 41

Relationship between requester’s origin and audience

News Site

Belgium

Germany

Spain

France

UK

89%

0%

0%

1%

2%

93%

0%

0%

0%

0%

Over 89% of requests to top Belgian news sites � come from local requesters

Origin of requester, by volume of requested URLs

Security and Privacy Group

37 of 41

Relationship between requester’s origin and audience

News Site

Belgium

Germany

Spain

France

UK

89%

0%

0%

1%

2%

93%

0%

0%

0%

0%

0%

96%

0%

1%

2%

0%

1%

96%

1%

1%

0%

0%

97%

1%

0%

Origin of requester, by volume of requested URLs

Security and Privacy Group

38 of 41

Relationship between requester’s origin and audience

News Site

Belgium

Germany

Spain

France

UK

89%

0%

0%

1%

2%

93%

0%

0%

0%

0%

0%

96%

0%

1%

2%

0%

1%

96%

1%

1%

0%

0%

97%

1%

0%

0%

0%

0%

100%

0%

0%

0%

0%

99%

0%

bbc.co.uk

0%

0%

0%

0%

97%

dailymail.co.uk

0%

1%

0%

2%

92%

Origin of requester, by volume of requested URLs

Security and Privacy Group

39 of 41

Conclusion

Challenge in providing transparency without de-anonymizing specific requesters.

Nuanced, dynamic usage of the RTBF over last five years.

Influenced in part by local privacy concerns and media norms.

Security and Privacy Group

40 of 41

Research now reflected in Transparency Report

Security and Privacy Group

41 of 41

Thanks!

kurtthomas@google.com

Security and Privacy Group