Μη χρησιμοποιεις web based wallets. Κατέβασε και χρησιμοποίησε το κανονικό wallet.
btw αυτό είναι πιο ασφαλές γιατί ειναι open source:
https://blockchain.info/wallethttps://easywallet.org/en/faqQ: How secure is the Easywallet.org server?
A: I carefully audit the source code for possible exploits and run a fairly secure server configuration. However, I cannot guarantee absolute security. This service comes with
no warranty! It is merely meant as an easy way to get started with Bitcoin and I do not recommend to store significant amounts of Bitcoins here.