The phrase "a considerable security" is correct and usable in written English.
It can be used when discussing a significant level of protection or assurance, often in contexts related to finance, safety, or risk management.
Example: "The company implemented a considerable security measure to protect sensitive data from cyber threats."
Alternatives: "a significant security" or "a substantial security".
However, having seen the women at Tuesday night's New York premiere and the men on Saturday evening, I must say that the only distinction of real note was the presence, on Saturday, of the Israeli president, Shimon Peres, accompanied by a considerable security detail and heckled by members of Adalah-NY: The New York Campaign for the Boycott of Israel.
Apple faced a considerable security threat with its SSL flaw, present in both iOS and OS X devices over the past few days.
Today, the Royal Maundy ceremony involves a considerable security operation, with drains in the area checked.
The UK faces a string of "considerable" security threats, including the emergence of militant group Isis and the "expanding scope" of cyber crime, the home secretary has said.
The CPE also addresses dimensions of sustainability and connectedness of supported initiatives in a context of considerable security concerns and high political volatility.
The trust inference framework provides the considerable security with an additional small overhead, which can be incorporated into any routing protocol.
You pay a fee to get one but, once loaded with cash, they offer considerable security.
There was considerable security effort post-9/11 and that will continue".
He takes considerable security precautions, including the use of encryption software, and is concerned that young people don't realise how much they are exposing online.
Although Apple built considerable security measures into its device, said Charles A. Miller, the principal security analyst for the firm, "Once you did manage to find a hole, you were in complete control".
Beyond the consequences for international relations, software surreptitiously sold by the North Korean government poses considerable security risks.
