"Zero-day" ek term hai jo cyber security mein istemal hoti hai. Ye ek tarah ka software vulnerability ya security flaw hota hai jo abhi tak software developer ya vendor (jaise ki ek operating system ya application ka developer) ko pata nahi hota hai. Iska matlab hai ki jab ye vulnerability discover hoti hai, to software developer ke paas uska koi patch ya solution nahi hota, kyun ki unko uske bare mein pahle se pata nahi tha.
Zero-day vulnerability ka istemal cyber attackers ya hackers karte hain, taki woh is vulnerability ka fayda utha sake aur target system mein illegal access ya nuksan pahuncha sake. Jab aisa hota hai, to system ya software ke users vulnerable ho jate hain, kyun ki unke paas us zero-day vulnerability ke khilaf koi protection nahi hoti.
Zero-day vulnerabilities ko normally responsible security researchers ya white-hat hackers discover karte hain, aur woh inform karte hain taki developer uska patch taiyar kar sake. Lekin, jab hackers ya cyber criminals iska istemal karte hain, to woh zero-day attack bolte hain.
Zero-day attacks se bachne ke liye, software aur systems ko regularly update karna, security best practices follow karna, aur reliable antivirus aur intrusion detection systems ka istemal karna bahut mahatvapurn hai.
"Zero-day" isliye kaha jata hai kyun ki ye ek aise security vulnerability ko darust karta hai jiska developer ya vendor abhi tak kisi din se aware nahi tha, yaani ki uski discovery ke din ko "day zero" ke roop mein liya jata hai.
Jab koi security researcher ya hacker ek aisi vulnerability ko pata lagata hai jo abhi tak developer ya vendor ke paas koi fix ya solution nahi hai, to us din ko "day zero" kehte hain. Is din se lekar developer us vulnerability ko fix karne ka process shuru karte hain, lekin is samay tak attackers uska fayda utha sakte hain kyun ki koi patch ya update available nahi hota.
Isliye, zero-day vulnerabilities ko kisi din se pata chala hota hai, aur is din se lekar developer uske samadhan tak ka time count hota hai. Zero-day attacks ka dar hota hai kyun ki isme attackers ka fayda hota hai jab tak us vulnerability ka patch available nahi hota.
"Zero-day" is shabd ka istemal isliye hota hai kyun ki jab ek naye software vulnerability ya security flaw prapt hota hai, to us din ya date ko 'day zero' ke roop mein refer kiya jata hai. Is din se lekar, jab tak software developer ya vendor us flaw ko fix karke ek security patch taiyar nahi karte, tab tak us flaw ko "zero-day vulnerability" ke roop mein jana jata hai.
Is shabd ka istemal isliye hota hai taki yeh clear ho ki us vulnerability ke khilaf koi official protection ya patch available nahi hai, aur hackers ya attackers uska fayda utha sakte hain. Zero-day vulnerabilities ko normally responsible security researchers ya white-hat hackers discover karte hain, aur unko developer ko inform karne ki koshish karte hain taki uska solution taiyar kiya ja sake.
Yadi hackers ya cyber criminals us zero-day vulnerability ka istemal karte hain, to us attack ko "zero-day attack" kehte hain, jisse target system ya software users vulnerable ho jate hain kyun ki unke paas uska protection nahi hota. Isliye, zero-day vulnerabilities aur attacks se bachne ke liye software ko updated rakhna aur security best practices ko follow karna mahatvapurn hai.
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