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-rw-r--r--railties/guides/source/security.textile2
1 files changed, 1 insertions, 1 deletions
diff --git a/railties/guides/source/security.textile b/railties/guides/source/security.textile
index 4656cf4e40..e2103959ac 100644
--- a/railties/guides/source/security.textile
+++ b/railties/guides/source/security.textile
@@ -166,7 +166,7 @@ end
The section about session fixation introduced the problem of maintained sessions. An attacker maintaining a session every five minutes can keep the session alive forever, although you are expiring sessions. A simple solution for this would be to add a created_at column to the sessions table. Now you can delete sessions that were created a long time ago. Use this line in the sweep method above:
<ruby>
-delete_all "updated_at < '#{time.to_s(:db)}' OR
+delete_all "updated_at < '#{time.ago.to_s(:db)}' OR
created_at < '#{2.days.ago.to_s(:db)}'"
</ruby>