Hyderabad has been on terror network' radar from last 10 years. I know the threat has certainly increased in lost couple of years because of city's developemne in several sectors.
People have to become resilient to face any evenuality that may struck badly at any time. I think police are doing their best even though the Government is eager to release some hard core terrorists for it's political gains. The best example is Mujib. The murderer of an IPS officer in 90's was released Aug 15, 2004 citing his good bahaviour in Jail. He came out and started operations all along and got arrested recently while helping terrorists to plot bombs.
Only strong will of people to survive and strive against such ill forces can help us. We Hyderabadis are ready for that.