suggested changing Bundesrat's voting procedures to discount abstention votes from the total. Many politicians of the opposition criticized his proposal, and some called for his resignation. In February 2009, Schäuble's homepage was hacked due to a security flaw in the TYPO3 CMS and its non-secure password gewinner ("winner"). The hack consisted of a defacement that placed a large, easily visible link on his front page to the homepage of the German Working Group on Data Retention. Relations with Greece Schäuble came under criticism for his actions during the "Grexit" crisis of 2015: it was suggested by Yanis Varoufakis that Schäuble had intended to force Greece out of the Euro even before the election of the left-wing Syriza government in Greece. This was confirmed by former US Treasury Secretary Tim Geithner in early 2014; calling Schäuble's plan "frightening," Geithner recorded that Schäuble believed a Greek exit from the Eurozone would scare other countries into line. Schäuble also received extensive criticism toward his austerity recommendations from Twitter via the hashtag #ThisIsACoup. Such criticism focused on the fact that Schäuble's insistence on policies of austerity was contradicted both by the empirical evidence that the policies he had insisted on had shrunk the Greek economy by 25%, a degree hitherto paralleled only in wartime, but also by reports from the IMF insisting that only massive debt relief, not further austerity, could be effective. Tax loopholes When a parliamentary inquiry was set up in 2017 to look into a banks dividend scandal, Schäuble had to confront public criticism that he waited too long to ban a double ownership loophole that let two parties claim ownership of the same shares and allowed both parties to claim tax rebates, causing the state to lose billions of euros in tax. Other activities (selection) Corporate boards KfW, Deputy Chairman of the Board of Supervisory Directors (2009–2017) Asian Infrastructure Investment Bank (AIIB), Ex-Officio Member of the Board of Governors (2016–2017) Non-profits Friends of the Festspielhaus Baden-Baden, Chairman Deutsche Nationalstiftung, Member of the Board of Trustees Deutsche Stiftung Denkmalschutz, Member of the Board of Trustees Deutsche Stiftung Querschnittlähmung ("German Paraplegia Foundation"), Member of the Board of Trustees Deutsches Museum, Member of the Board of Trustees Friends of the Berliner Philharmonie, Member of the Board of Trustees House of Finance, Goethe University Frankfurt, Member of the Board of Trustees International Foundation for Research in Paraplegia, Member of the Board of Trustees Max