حماية الحساب مهمة بغض النظر عن المرسل المجهول.

Because حماية is a verbal noun (called a maṣdar), meaning protection or protecting.

So حماية الحساب literally means the protection of the account or protecting the account.

This is very common in Modern Standard Arabic. Instead of saying something with a full verb, Arabic often uses a maṣdar to make a general statement:

• حماية الحساب مهمة = Protecting the account is important
• literally: Account protection is important

This gives the sentence a formal, general tone.

This is an iḍāfa construction, often called a genitive construction or construct phrase.

It is made of:

• حماية = protection / protecting
• الحساب = the account

Together:

• حماية الحساب = the protection of the account / protecting the account

A few important things about iḍāfa:

1. The first word usually does not take ال

   • so we say حماية الحساب
   • not الحماية الحساب

2. The second word determines definiteness for the whole phrase.

   • Since الحساب is definite, حماية الحساب is understood as definite or specific enough in context.

Because حماية is grammatically feminine.

Many Arabic nouns ending in ـة are feminine, and حماية is one of them. So the adjective must agree with it:

• حماية ... مهمة
• not حماية ... مهم

This is adjective/predicate agreement in gender.

Here مهمة functions as the predicate of the sentence.

The sentence structure is:

• حماية الحساب = the topic / subject
• مهمة = important

So the full meaning is:

• Protecting the account is important

Even though مهمة looks like an adjective, in this sentence it is being used predicatively, like important in English.

In Arabic, the present tense of to be is usually not stated.

So:

• حماية الحساب مهمة literally: Protecting the account important meaning: Protecting the account is important

This is completely normal in Arabic nominal sentences.

If you wanted past tense, then Arabic would use كان or another form:

• كانت حماية الحساب مهمة = Protecting the account was important

بغض النظر عن is a fixed expression meaning:

• regardless of
• irrespective of
• without regard to

So in this sentence:

• بغض النظر عن المرسل المجهول = regardless of the unknown sender

It is best learned as a chunk rather than word-by-word.

By itself, بغض literally relates to dislike or aversion in other contexts, but in the expression بغض النظر عن, the phrase is idiomatic.

So for learners, the safest approach is:

• memorize بغض النظر عن as a full expression
• understand it as regardless of

Trying to interpret each word separately is usually less helpful here than learning the phrase as a unit.

Because the expression is conventionally:

• بغض النظر عن ...

The preposition عن is part of the idiom. Many Arabic expressions require a specific preposition, just like English does:

• interested in
• depend on
• regardless of

So here you should memorize:

• بغض النظر عن شيء = regardless of something

It means the unknown sender.

Breakdown:

• المرسل = the sender
• المجهول = the unknown / unknown

So the second word describes the first:

• المرسل المجهول = the unknown sender

This is a noun + adjective structure.

Because in Arabic, adjectives usually agree with the noun they describe in definiteness.

So:

• المرسل = the sender
• المجهول = the unknown

Together:

• المرسل المجهول = the unknown sender

If the noun were indefinite, the adjective would also be indefinite:

• مرسل مجهول = an unknown sender

This is a very important Arabic pattern.

It is originally an active participle from the verb أرسل (to send), but here it functions as a noun meaning sender.

This is extremely common in Arabic. Many active participles act like ordinary nouns:

• كاتب = writing / writer → often writer
• طالب = seeking / طالب → student
• مرسل = sending / sender → sender

So in this sentence, you can simply understand المرسل as the sender.

المجهول literally means the unknown.

It comes from the root idea of being unknown / not known. In this sentence it describes المرسل, so it works like the adjective unknown in English:

• المرسل المجهول = the unknown sender

You may also see مجهول in other phrases:

• شخص مجهول = an unknown person
• سبب مجهول = an unknown reason

Yes. الحساب can mean:

• account (very common in technology and online contexts)
• calculation
• sometimes reckoning in other contexts

Here, because of the overall meaning, it clearly means account, such as a user account.

Context is what tells you which meaning is intended.

It is a nominal sentence because it begins with a noun phrase:

• حماية الحساب

Arabic sentences are often classified as:

• verbal sentences: begin with a verb
• nominal sentences: begin with a noun or noun phrase

Since this one begins with حماية الحساب, it is nominal.

Yes. In fully vocalized, formal Arabic, you could read it approximately as:

• حِمايةُ الحِسابِ مُهِمَّةٌ بِغَضِّ النَّظَرِ عَنِ المُرسِلِ المَجهولِ

The rough case roles are:

• حمايةُ = nominative, because it is the subject/topic
• الحسابِ = genitive, because it is the second part of iḍāfa
• مهمةٌ = nominative, because it is the predicate
• المرسلِ المجهولِ = genitive after عن

In normal unvowelled writing, these endings are not shown.

Yes. Depending on style, it could be rendered as:

• Protecting the account is important, regardless of the unknown sender.
• Account protection is important, regardless of who the unknown sender is.
• It is important to protect the account, regardless of the unknown sender.

Arabic often allows several good English translations, especially when a maṣdar like حماية is used.

It is grammatically understandable, but a learner might wonder whether the final phrase sounds a bit unusual depending on context.

For example, in cybersecurity or messaging contexts, Arabic might more naturally say something like:

• بغض النظر عن هوية المرسل = regardless of the sender’s identity
• حتى لو كان المرسل مجهولًا = even if the sender is unknown

Still, المرسل المجهول is understandable and means what you expect: the unknown sender.

A practical pronunciation is:

ḥimāyat al-ḥisāb muhimmah bighaḍḍ an-naẓar ʿan al-mursil al-majhūl

A few notes:

• ح is a deeper h
• غ is a gargled sound, often unfamiliar to English speakers
• ض is an emphatic d
• ع in عن is a consonant, not just a vowel

If you are reading without full case endings, this pronunciation is perfectly fine for learning.