If a new primary use is anticipated for a component, consider whether this creates a new trust boundary and a need for additional validity checking outside the component.

如果希望组件提供新的主要用途，请考虑这是否会创建新的信任边界和带来在组件外进行额外有效性检查的需求。

youdao

Considering the primary USES of components within application structures leads to more appropriate placement of data validity checking — for example, only at managed trust boundaries.

通过考虑组件在应用程序结构内的主要使用情况，可以更为恰当地确定数据有效性检查的位置——例如，仅在受管理的信任边界进行检查。

youdao

Now, without checking the validity of what you're doing, you copy 256 bytes into a stack area reserved at only 128 bytes.

现在，您没有检查正在处理的内容的有效性，而是将256个字节复制到了仅为128个字节的保留堆栈空间内。

youdao

This gets done through the inherently flawed mechanism of merely checking the validity of the card that has been presented (or typed in).

FORBES: Tokenization And The Collapse Of The Credit Card Payment Model