My Lords, first, I should draw attention to my interests in the register on policing and counterterrorism matters. Secondly, I should make clear that my starting point on the Bill is that it is important that the developing gaps in access to communications data are addressed to protect the nation against all sorts of threats.
In any set of counterterrorism or counterespionage measures, or whatever else it might be, you have to look at the balance and weigh the benefit to the nation in protecting its citizens by having those powers against the potential downside or consequences of exercising them.
When we come to the question contained in this group of amendments—essentially about enabling or requiring companies to break the apparent encryption—we have to look carefully at the potential downsides presented by this. The first downside, or danger, is that by enabling this to happen—by creating the mechanism and requiring companies, as my noble friend Lady Hayter said, to make new arrangements so that encryption can be broken—you create a back-door mechanism. This would be available not just to the forces of good—those who are trying to protect all our security—but to cybercriminals and those who would do us ill. Therefore you need to weigh clearly what you are trying to do against whether you are creating something that will make it easier for criminals and those who would do us harm.
The second element is the extent to which what we do in this country sets a precedent that will be seized in other countries, whose interests may not be the same as ours or as positive as ours towards their citizenry. If we create that precedent, what is to prevent Governments in other countries saying that they want the same powers and therefore doing the same? That test has to be applied to quite a number of the measures in the Bill. As I say, my starting point is that I want the state to be able to fill the gap in its access to communications data that is emerging and opening up. However, I want to hear from the Government a clear explanation of why in this set of cases the benefits outweigh the potential disbenefits.