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18 \LARGE Security Engineering (7)\\[-3mm] |
18 \LARGE Security Engineering (7)\\[-3mm] |
19 \end{tabular}}\bigskip\bigskip\bigskip |
19 \end{tabular}}\bigskip\bigskip\bigskip |
20 |
20 |
21 \normalsize |
21 \normalsize |
22 \begin{center} |
22 \begin{center} |
23 \begin{tabular}{ll}Ch |
23 \begin{tabular}{ll} |
24 Email: & christian.urban at kcl.ac.uk\\ |
24 Email: & christian.urban at kcl.ac.uk\\ |
25 Office: & S1.27 (1st floor Strand Building)\\ |
25 Office: & S1.27 (1st floor Strand Building)\\ |
26 Slides: & KEATS (also homework is there)\\ |
26 Slides: & KEATS (also homework is there)\\ |
27 \end{tabular} |
27 \end{tabular} |
28 \end{center} |
28 \end{center} |
57 \end{frame} |
57 \end{frame} |
58 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
58 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
59 |
59 |
60 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
60 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
61 \begin{frame} |
61 \begin{frame} |
62 \frametitle{UCAS} |
62 \frametitle{UCAS (a charity)} |
63 \mbox{}\\[-15mm]\mbox{} |
63 \mbox{}\\[-15mm]\mbox{} |
64 \small |
64 \small |
65 \begin{quote} |
65 \begin{quote} |
66 ``The Universities and Colleges Admissions Service received more |
66 ``The Universities and Colleges Admissions Service received more |
67 than \pounds{12m} last year in return for sending targeted advertising |
67 than \pounds{12m} last year in return for sending targeted advertising |
106 \frametitle{Privacy, Anonymity et al} |
106 \frametitle{Privacy, Anonymity et al} |
107 |
107 |
108 Some terminology: |
108 Some terminology: |
109 |
109 |
110 \begin{itemize} |
110 \begin{itemize} |
111 \item \alert{secrecy} is the mechanism used to limit the |
111 \item \alert{\bf secrecy} is the mechanism used to limit the |
112 number of principals with access to information (e.g., |
112 number of principals with access to information (e.g., |
113 cryptography or access controls) |
113 cryptography or access controls) |
114 |
114 |
115 \item \alert{confidentiality} is the obligation to protect the |
115 \item \alert{\bf confidentiality} is the obligation to protect the |
116 secrets of other people or organizations (secrecy for |
116 secrets of other people or organizations (secrecy for |
117 the benefit of an organisation) |
117 the benefit of an organisation) |
118 |
118 |
119 \item \alert{anonymity} is the ability to leave no evidence of |
119 \item \alert{\bf anonymity} is the ability to leave no evidence of |
120 an activity (e.g., sharing a secret) |
120 an activity (e.g., sharing a secret, whistle blowing) |
121 |
121 |
122 \item \alert{privacy} is the ability or right to protect your |
122 \item \alert{\bf privacy} is the ability or right to protect your |
123 personal secrets (secrecy for the benefit of an |
123 personal secrets (secrecy for the benefit of an |
124 individual) |
124 individual) |
125 |
125 |
126 \end{itemize} |
126 \end{itemize} |
127 |
127 |
373 were retained\medskip |
373 were retained\medskip |
374 |
374 |
375 \item could be cross referenced with public voter registration |
375 \item could be cross referenced with public voter registration |
376 data in order to find out what the medical record of the |
376 data in order to find out what the medical record of the |
377 governor of Massachusetts was (in 1997 Latanya Sweeney) |
377 governor of Massachusetts was (in 1997 Latanya Sweeney) |
378 |
378 \bigskip |
|
379 |
|
380 \small |
|
381 (his record included diagnoses and prescriptions) |
379 \end{itemize} |
382 \end{itemize} |
380 |
383 |
381 \end{frame}} |
384 \end{frame}} |
382 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
385 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
383 |
386 |
499 cannot be learned without access to the database.\pause\bigskip |
502 cannot be learned without access to the database.\pause\bigskip |
500 |
503 |
501 \item Differential privacy is a ``protocol'' which you run on some dataset \bl{$X$} producing |
504 \item Differential privacy is a ``protocol'' which you run on some dataset \bl{$X$} producing |
502 some output \bl{$O(X)$}.\bigskip |
505 some output \bl{$O(X)$}.\bigskip |
503 |
506 |
504 \item You want to achieve \alert{forward privacy} |
507 \item You want to achieve \alert{\bf forward privacy}. |
505 \end{itemize} |
508 \end{itemize} |
506 |
509 |
507 \end{frame}} |
510 \end{frame}} |
508 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
511 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
509 |
512 |
510 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
513 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
511 \mode<presentation>{ |
|
512 \begin{frame}[c] |
514 \begin{frame}[c] |
513 \frametitle{Differential Privacy} |
515 \frametitle{Differential Privacy} |
514 |
516 |
515 \begin{center} |
517 \begin{center} |
516 User\;\;\;\; |
518 User\;\;\;\; |
535 \begin{center} |
537 \begin{center} |
536 \bl{\large$\Sigma$} all staff $-$ \bl{\large$\Sigma$} all staff $\backslash$ Christian |
538 \bl{\large$\Sigma$} all staff $-$ \bl{\large$\Sigma$} all staff $\backslash$ Christian |
537 \end{center} |
539 \end{center} |
538 \end{itemize} |
540 \end{itemize} |
539 |
541 |
540 \end{frame}} |
542 \end{frame} |
541 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
543 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
542 |
544 |
543 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
545 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
544 \mode<presentation>{ |
546 \mode<presentation>{ |
545 \begin{frame}[c] |
547 \begin{frame}[c] |
617 |
619 |
618 \end{frame} |
620 \end{frame} |
619 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
621 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
620 |
622 |
621 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
623 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
622 \begin{frame}[c] |
624 %\begin{frame}[c] |
623 \frametitle{Tor} |
625 %\frametitle{Tor} |
624 |
626 % |
625 \begin{center} |
627 %\begin{center} |
626 ?? |
628 %?? |
627 \end{center} |
629 %\end{center} |
628 \end{frame} |
630 %\end{frame} |
629 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
631 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
630 |
632 |
631 |
633 |
632 |
634 |
633 |
635 |