Security for connection of iPhone with PC by usb cable?

When i connect my iphone through the usb cable to any PCs, it just became connected and anyone can do anything with my phone and can access to everything in my phone! So if someday my iphone being stolen, there's no problem for the robber! So what should i do for this!

How to take pictures on my iPhone?

I'm 17 years old and my parents STILL have stupid restrictions on my iPhone. I was just allowed to unlock the App Store. My parents won't unlock my camera, due to the fact of "sexting." Which I have never done, they just see stuff like that on the news and
automatically think everyone in the world does it. Is there a way to take pictures without unlocking the camera?

Being bullied at work, taking emails without my consent at work?

I'm currently being bullied in the corporate work place. Physical intimidation, deleting and archiving files that ae a week old.being yelled at when the boss is not around etc. This has been going on for over 7 weeks now. One main instigator and one minion. The minion is nie to me when the main perp isn't in the office. Today I left my iphone on voice record whilst at a site induction at another building. An hour and a half recorded without them knowing. No video only voice. Voices are identifiable. They mocked me, accessed my work email that where directly to the GM, printed off and copied then distributed amongst 4 people. They insulted me, looked into my personal handbag, made comments about how illegal what they were doing is but still did it. Mocked other colleagues, chated about how management team ae using me to clean things up and i should not have gone to site induction toda as the Co do not intend on keeping me. I have been on contract for 6 months, permanent with 6 months prob since May. I recorded the whole thing, very upsetting. I work longer hour than all of them. I was given the major accounts from the instigator and the bullying has continued. The HR manager asked me today what's going on and I told her. I don't know what to do now. I have never been in this positin before. My direct Manager told me weeks earlier these people are not as professional as you and they are laid back, on the recording they called me a recovery drug addict because I email to confirm things and then diarize, they said I must be a recovering drug addict because I forget things thats why I email and diary reminder. I do its because it works and is effiecient. Any advice please. I'm in Australia. Perth. Thank you. I have documented all the bullying, date time person.

Added (1). And no, I do not take drugs. I'm not on medication nor do I have any illness. I have been asked (by management ) to do specific work and am doing it and continue to be bullied.

How to delete browsing history from BT home hub?

Planning surprise for mum, used my iPhone to access Wi-Fi on their BT home hub, don't want any chance of them finding out what I'd been looking at even though I was using my iPhone.
If this data is stored on their home hub box, can it be erased? Or am I safe?

How to get rid of other on my iPhone?

I only have a 8GB iPhone, but nearly half the usable memory is now 'other'. When i tried to back it up to clear some of the 'other', it said the iPhone does not have enough available space to back up my phone. Please help, I have deleted pretty much every app, reduced all my music file sizes, cleared camera roll, yet i still have hardly any available memory

Can't restore whatsapp chat history?

Ok I have downgraded my iphone 4 to ios 5.1.1 from ios 6.1.3.
I want to restore my whatsapp chat history but itunes says the backups
from ios 6 are not compatible.

I do not care if the actual messages are lost but I want the chat groups to be there.
When I launch whatsapp in ios 5.1.1 it prompts me with the message that if I continue I can't restore my messages at a later date.

So my question is: If I launch whatsapp in ios 5.1.1 without restoring, will it show my old group chats without the actual messages? Or will it be blank and I have lost all my messages?

Additional question: Is there a way to make the ios 6 backup compatible with ios 5 or extract the information from it?