The phrase "a significant attack" is correct and usable in written English.
It can be used to describe an attack that has considerable importance, impact, or severity in various contexts, such as military, cybersecurity, or personal situations.
Example: "The report detailed a significant attack on the company's servers, resulting in a major data breach."
Alternatives: "a major assault" or "a considerable strike."
And that increases the possibility of a significant attack that inflicts casualties intolerable to a support base that is already wavering.
A significant attack on the DNS system could cripple the internet, sending the world back to a pre-digital dark age.
Indeed, the Afghan security forces are successfully in charge of security in Kabul, where the Taliban have been unable to conduct a significant attack despite many attempts.
The group has not mounted a significant attack since it killed 17 people with a bomb at Egypt's embassy in Pakistan in 1995.
England were 10 points ahead in the third quarter and comfortably in control against opponents who had barely mounted a significant attack and whose vaunted defence was pulled apart with surprising ease at times.
There was no evidence to suggest that the opposition had the capability to carry out such a significant attack and the regime had launched a heavy offensive in the area in the days before and after the incident.
While the appeal target is modest compared to Save the Children's international humanitarian appeals, the campaign will be seen as a symbolically significant attack on what the charity says is the coalition's failure to tackle mounting poverty, hardship and inequality in the UK.
In early June, plans were made for the Australian 2nd Division to attack around Morlancourt in preparation for a more significant attack at Hamel.
An analyst interviewed by The Associated Press interpreted the message as a "clear threat against E.U. member countries and an indicator of a possible upcoming significant attack".
A Predator operated by the intelligence agency played a crucial role in one significant attack, in which Muhammad Atef, the Qaeda military chief, was believed to have been killed, officials said.
It was the first significant attack on a convoy in Logar Province, south of Kabul, in the past 18 months, said the provincial governor's spokesman, Din Mohammed Darwish.
