| Old, new, borrowed, blue --: a perspective on the evolution of mobile platform security architectures Recent countries visiting this post |  |
 | 6 | United States |
 | 3 | |
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| Old, new, borrowed, blue --: a perspective on the evolution of mobile platform security architectures Recent countries visiting this post | |
| 6 | United States |
| 3 | |
| 1 | Germany |
| 1 | Sweden |