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SC-900_ Microsoft Security, Compliance, and Identity Fundamentals.
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SC-900_ Microsoft Security, Compliance, and Identity Fundamentals.
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SC-900: Microsoft Security, Compliance,and Identity Fundamentals
Zero Trust - ANS-A security model that assumes everything is on an open and
untrusted network, even resources behind firewalls
"Trust no one, verify everything"
Zero trust guiding principles - ANS-1. Verify explicitly - authenticate/authorize based on
all data points (e.g. identity, location, device, service, data classification, anomalies,
etc.)
2. Least privileged access - limit with JIT/JEA, risk-based adaptive policies, and data
protection
3. Assume breach - Segment networks, users, devices, apps. Encrypt data. Use
analytics to improve security.
Zero trust foundational pillars - ANS-1. Identities - can be users, services, or devices
2. Devices - monitor for health/compliance
3. Apps - manage permissions/access
4. Data - should be classified, labeled, and encrypted where appropriate
5. Infrastructure - understand baseline to detect anomalies and flag risky behavior to
take action
6. Networks - should be segmented and include real-time threat monitoring and
protection
Shared responsibility model - ANS-Identifies which security tasks are handled by the
cloud provider vs the customer
Types:
SaaS (Software as a Service)
PaaS (Platform as a Service)
IaaS (Infrastructure as a Service)
On-premises data center (On-prem)
What security tasks ALWAYS responsibility of the customer? - ANS-1. Data
2. Devices
3. Accounts/Identities
,Software as a Service (SaaS) - ANS-Software hosted and managed by the cloud
provider for the customer. Cloud provider manages everything aside from data, devices,
accounts, and identities
Examples include: Microsoft 365, Skype, and Dynamics CRM
On-prem datacenter - ANS-Customer responsible for EVERYTHING from physical
security to encrypting sensitive data
Infrastructure as a Service (IaaS) - ANS-leveraging the cloud provider's cloud
infrastructure (physical) including computers, network, and physical security of the
datacenter. Customer still manages software components.
Platform as a Service (PaaS) - ANS-Provides an environment to build, test, and deploy
software applications by providing underlying infrastructure including the hardware and
OS
Dictionary attack - ANS-Attempts to steal identity by trying a large number of known
passwords
AKA Brute force attacks
Rootkits - ANS-Intercept and change the standard OS process. Can then report the
device is healthy and not infected so can't be trusted
Symmetric encription - ANS-Uses the same secret key to encrypt and decrypt
Asymmetric encryption - ANS-Uses a public key and private key pair
Examples: TLS (Transport Layer Security) for the HTTPS protocol, and data signing
Hashing - ANS-Uses and algorithm to convert original text into a unique fixed-length
hash value
Used to store passwords
Best practice: salt passwords
,Microsoft Cloud Adoption Framework for Azure - ANS-Consists of documentation,
implementation guidance, best practices, and tools designed to help businesses adopt
cloud
Cloud Adoption Framework for Azure Lifecycle - ANS-1. Strategy: define business
justification and expected outcomes of adoption.
2. Plan: align actionable adoption plans to business outcomes.
3. Ready: Prepare the cloud environment for the planned changes.
4. Adopt
-Migrate: Migrate and modernize existing apps
AND/OR
-Innovate: Develop new cloud-native or hybrid apps
5. Govern: Govern the environment and workloads.
6. Manage: Operations management for cloud and hybrid solutions.
Password spray attack - ANS-Attempts to match a username against a list of weak
passwords
User risk vs sign-in risk - ANS-User risk - probability that a given identity or account is
compromised (i.e. leaked credentials on the web)
Sign-in risk - probability that a given authentication request isnt authorized by the
identity owner (i.e. likelihood sign-in not performed by the user based on location)
What is the new security perimeter? - ANS-Identity - how a user, app, device, etc. can
be verified and authenticated to be who they say they are such
Pillars of Identity - ANS-1. Administration - creation and management (LCM) of identities
2. Authentication (AuthN)- proving identity, how much evidence needed
3. Authorization (AuthZ) - determine level of access an authenticated identity has
4. Auditing - tracking via logs who does what, when, where, & how via reporting alerts
and governance
Modern authentication - ANS-All services and information are are managed by a central
identity provider
Client authenticates with IdP. Once authenticated, the IdP sends the client a security
token. The token is used as proof of identity that is sent to the server
, The server has a trust relationship with the IdP so it verifies with the IdP and trusts the
security token
Security token - ANS-Cryptographically signed document issued to identity after
authenticating with IdP
Used as proof of identity with servers
Contains 'claims' associated with the identity
Trust relationship - ANS-relationship between the server and the IdP to that is used to
validate the security token granted to the client
Common claims of security tokens - ANS-subject - unique, unchanging identifier of the
client
issued at - when security token was issued
expiration - when the security token should expire
audience - describes the recipient of the token so the token cannot be forwarding to
others. If audience does not list recipient it is dropped
Federation - ANS-Single Sign-On between multiple identity providers
Enables access of services across organizational boundaries by establishing trust
relationships between the domain/entities' identity provider
Trust is not always bidirectional
SSO - ANS-Single Sign-On - user logs in once and that credential is used across
multiple apps/resources
Directory Services - ANS-Stores directory data (hierarchical structure of info on the
network) and makes available to users, admins, services, apps, etc.
AD - ANS-Active Directory - set of directory services developed by Microsoft as part of
Windows 2000 for on-premises domain-based networks
AD DS - ANS-Active Directory Domain Services - stores information about members of
the domain, including devices and users, verifies their credentials, an defines their
access rights. A server running AD DS is a domain controller (DC)
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