1. 1 News about the privacy document 6 th TF-LSD Meeting Limerick 2.6.2002 Peter Gietz peter@daasi.de

2. 2 Status  No comments other than the discussion at last meeting  These comments were on crawler detection and crawler policy, which were included in new chapter 3: Generic description of the White Pages Indexing System  Privacy enhancing technologies were renamed to Privacy Preserving technologies

3. 3 3.1. Motivation  Replacement of the X.500 based Nameflow service  Problems: no chaining and no knowledge information

4. 4 3.2. Overall Architecture  3.2.1. The Common Indexing Protocol and ist implementations Very short description of CIP and of the DESIRE II and the LIMS implementation Generic description of the componants  3.2.2. Referrals contain the data given away by the indexing system Detailed analysis of the fields of an LDAP URL Short discussion on different posibilities to use them

5. 5 Referrals  Two types of answers in a referral: Ldap://datahost:888/c=NL??sub?(mail=xyz) Ldap://datahost:888/c=NL, o=Univ. XY, ou=Department of Physics, cn=Mister X?base?

6. 6 3.3. Data Sourcrs  Different modes of data subject‘s consent: Consent with signature on paper Consent via email Consent implied by non objection

7. 7 3.4. Indexing schema  Minimalset of attributes Common name Surname Given name Organization Organizational unit Mail country

8. 8 3.5. Crawler access to the data  Server side sizelimits can be overcome by crawlers  Spammers could use such crawlers

9. 9 3.5.1. Crawler detection  Distinct features of a crawler: Big number of search requests Regular patterns in sending requests Short timeperiod in between requests IP address known to belong to a spammer IP address maps to a domain outside the community Crawler doesn‘t bind to authenticate itself

10. 10 3.5.2. Crawler policy  Crawler policy defines: which part of the name space to crawl Which attributes should be crawled Which object classes to include in the search filter How many levels should be crawled Etc.

11. 11 3.6. Protection of the Index Objects  PGP-MIME encryption